NOBULL Trainer Review (2024): Our Take on This Versatile Cross-Training Shoe

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Key Features:

• Price: $129–$169
• Weight: 11 ounces (men’s 9, women’s 10.5)
• Stack height: 26 millimeters
• Heel-to-toe drop: 4 millimeters
• Fit: True to size
• Best for: Cross-training, strength training, powerlifting, plyometrics, HIIT (high-intensity interval training), light runs or running intervals

After over eight years of cross-training, I’ve concluded that when it comes to shoes, people like what they like—whether that be an old-school Reebok sneaker or the latest CrossFit shoe, we can all agree that the choice of training shoe can significantly impact the outcome of a workout. When a new shoe hits the market or you spot your favorite athlete or influencer wearing a certain shoe, there's usually a lot of lively discussion within the fitness community as enthusiasts eagerly assess its performance and features. This is precisely what happened when NOBULL released the Trainer in 2015, designed to be a go-to training shoe that can withstand any workout.

Founded in 2015, the NOBULL brand, and, specifically its trainers have exploded in popularity. The brand has partnered with the PGA Tour, CrossFit, the NFL Combine and the personal training app Lifetime Training. And, the brand often sponsors the CrossFit Games and Olympic athletes, and professional football, golf, soccer and hockey players—all of whom proudly represent NOBULL. Given all the hype, I was curious if the brand's original cross-training shoe, the Trainer, delivered. In this NOBULL Trainer review, I’ll break down the construction and design, what types of workouts it's great for, factors to consider, how it stacks up against other training shoes and more.

What Is the NOBULL Trainer?

The NOBULL Trainer is a versatile cross-training shoe designed to provide a stable foundation that can withstand the demands of your workout. It has an abrasion-resistant upper fortified with protective guard plates for extra durability to withstand the most challenging training sessions.

The outsole pattern ensures a firm grip on the gym floor and provides traction on outdoor surfaces. Underneath the protection plates, the mesh base of the upper allows air to circulate and the micro suede tongue is perforated for extra breathability.

With a 4 millimeter heel-to-toe drop, the Trainer has a minimalistic feel that enhances your connection to the ground. This theme carries into the aesthetic elements of the shoe, with over 40 monochromatic colorways to choose from. NOBULL also offers patterned and printed options and high-top Trainers for those who prefer ankle support.

What we like:

• Ideal for indoor or outdoor training
• Perforated tongue and mesh upper for breathability
• Guard plates on the upper to protect from abrasion
• High carbon rubber outsole provides traction and versatility
• Tread pattern extends to the arch of the outsole for grip during rope climbs
• Midsole dampens to absorb shock and is flexible
• Low drop and stack height to encourage foot-to-ground connection
• Insole is molded to the shape of the foot
• Roomy toe box ideal for toe splay and those with a wider foot

What to consider:

• Spot clean only; cannot be washed in a washing machine
• Reviews mention a break in period
• Not ideal for those who need more arch support

Our Experience Working Out With the NOBULL Trainer

Fit

These shoes fit true to size, and I really like how the Trainer feels while wearing them. I don’t have wide feet, but I like enough room for toe splay during my workouts, and the roomy toe box leaves plenty of space. The shape narrows slightly at the midfoot and heel, so my arch and hindfoot felt supported but not suffocated. The outsole feels flat with minimal cushioning, which is expected with any training shoe.

The first time testing, I was surprised with how tough the upper felt and notably there was little give when I flexed my toes. Overall, the upper and outsole felt stiff yet stable during the first few workouts. After the break-in period, it felt less rigid, and I noticed a crease forming on the top of the toe box. This isn’t necessarily a bad thing, just something that stood out to me since most of the trainers I wear have a mesh upper with protective overlays, so typically, there is no creasing.

Lifting

The Trainer has a low stack and a flat sole to provide a stable lifting platform. Before lifting, I like to adjust my stance while holding my barbell, and I found that the supportive structure of the midsole helped me find my footing. During each lift, my feet felt connected to the platform, the tread felt grippy on the finished wood and I felt comfortable moving through complex lifts. The minimalist design and low stack height encouraged ankle dorsiflexion (the natural range of motion) while squatting.

Cross-Training

The Trainers are an ideal shoe for cross-training, which makes sense given the name. The midsole isn’t overly padded, so my feet feel connected to the ground; however, the shoe helped absorb the shock during high-impact movements such as box jumps and jump roping. 

I opted for a light color, which is usually risky because my training includes indoor workouts on black mats and outdoor workouts on pavement that is sometimes wet. Overall, the Trainers have held up well, and I haven’t noticed any scuff marks, even on the toe clip, which comes in direct contact with the ground during burpees. I like to wear these on wetter training days because the upper is water-repellant, and my feet have remained dry even during light rain.

Running and day-to-day wear

I found that the Trainer performs well during shuttle runs, which require increased speed and enhanced grip due to pivoting back and forth. Many of my workouts require running anywhere between 200 meters to 1,600 meters, and the shoes felt lightweight and flexible as I ran through my natural gait and kept my feet comfortable. I wouldn’t wear these shoes for running longer distances since cushioned running shoes offer more cushioning at the heel and midfoot that can help absorb shock.

I wore the Trainers outside the gym and to several social gatherings without any issues. I prefer the minimalist look of the shoe and neutral colorway because I can match it easily with any outfit. My feet felt comfortable while walking around several stores, and the slightly padded collar prevented friction. If you stand for long periods or take long walks, I recommend a shoe with a cushioned sole—I opted for my walking shoes for my nightly stroll with my dogs since it’s over two miles.

Related Post: Best Shoes for Standing All Day

Construction and Design

Midsole

Phylon (EVA)

The midsole material is Phylon, a patented foam made from ethylene vinyl acetate (EVA) known for its cushioning performance, elasticity and flexibility. This foam dampens and absorbs the impact of box jumps, running, burpees, Olympic lifts and other high-impact movements. As it absorbs shock, it efficiently returns energy, while its flexibility aligns with your feet, matching their arch and flex during workouts.

While this material is known for its cushioning, these shoes have a low stack—a forefoot measurement of 15 millimeters and a heel measurement of 11 millimeters—meaning minimal vertical thickness or height from the ground, encouraging a natural and responsive connection between the foot and the ground. The heel-to-toe drop is just 4 millimeters, encouraging a natural and responsive connection between the foot and the ground.

Outsole

High carbon rubber

The durable high carbon rubber outsole has a multi-directional tread pattern that helps grip indoor and outdoor surfaces during lateral and non-lateral movements. Each circular lug has a star engraved in the center to prevent slippage, and the tread extends to the arch of the outsole for grip during rope climbs. This material is more abrasion-resistant than solid rubber because it creates a higher frictional force which reduces the slip rate, making it less susceptible to wear and tear from regular training in these shoes.

This type of outsole is ideal for those who like to mix training indoors and outdoors because it can handle temperature extremes and moisture. It also maintains flexibility, so it moves with the feet naturally. Medial and lateral side plates and toe clips protect the shoe's upper from damage during wall walks and other high-contact movements. This protective feature also adds stability and support to prevent excessive foot movement inside the shoe.

Upper

SuperFabric

NOBULL's patented SuperFabric upper is designed to withstand the rigors of everyday training. There are guard plates to minimize damage, and the protective overlay is in a dot matrix pattern to maintain flexibility. The mesh base allows airflow so your feet don’t overheat, and the perforated microsuede tongue is breathable. The laces weave through the tongue in two places for a secure fit, and each eyelet is reinforced with a washer to help prevent damage from tearing and rubbing. This cross-training shoe also has a seamless design to minimize potential weak points in the construction, allow for a secure fit and create a sleek, minimalist look.

Aside from being durable, the upper has a water-repellent coating to help keep moisture from penetrating the surface. When the Trainer requires cleaning, the process is simple. NOBULL says, “We recommend using warm water with a mild clear soap and then spot cleaning with a wet cloth or soft brush. We do not recommend putting your NOBULLs in the washing machine.”

NOBULL Trainer for CrossFit and Lifting

CrossFit involves many movements, including weightlifting, gymnastics, running and more. Josh Makar, CF-L3, USAW Level 1, CrossFit coach of 11 years and co-owner of Harborside CrossFit, offered some valuable insights into the essential features of a cross-training shoe—such as the Trainer—to consider. In terms of CrossFit workouts and lifting specifically, he says, "When you're lifting a load beyond just your body weight, like in a squat or press, you want a solid and stable platform from which to push through the floor. Your shoe should put you in a good squat position, which means your whole foot should be in contact with the ground, and your ankles should be stacked."

The Trainer’s carbon rubber outsole and 4 millimeter heel-to-toe drop provide a solid lift foundation, while the phylon midsole keeps your feet comfortable. These workout shoes have a low stack (23 millimeters), meaning less material is between your foot and the ground. The anatomical sock liner is custom-molded to accommodate the natural variations in foot shape between men and women, ensuring a secure fit that enhances stability and proper positioning during lifts and workouts.

Related Post: The Best Cross-Training Shoes for Women

NOBULL Trainer for Cardio

"These shoes should have a stable bottom with nominal cushioning and give. This bounce is good for running and bodyweight movements, but also forgiving enough for explosive and repetitive movements like rowing, jumping rope, running, and box jumps,” Makar says. This means that the shoes are good for cardio movements often seen in cross-training workouts, but when we asked about running longer distances, he did not recommend a training shoe. "Running-specific shoes are designed to absorb the impact of your foot landing,” he says. “That's important to keep your feet and joints healthy for running, but it's very different from what you should look for in a training shoe."

The Trainer has a responsive midsole and a flexible sole and upper, ideal for cardio-based movements, short-distance runs such as sprints and running intervals. However, we recommend a running shoe if you plan to run distances longer than one mile.

Who Should Buy the NOBULL Trainer

The NOBULL Trainer is ideal for those who mix indoor and outdoor training. The high carbon rubber sole has a lug pattern that helps grip the gym floor and outdoor surfaces, and the upper is water-repellant.

Lifters, CrossFitters and those who need weightlifting shoes with a stable base for heavy lifts will also find that the 4-millimeter drop and low stack help the feet feel connected with the ground for a strong, stable position and allow for better feedback. Plus, the Trainer’s low profile keeps it lightweight, essential for quick transitions and agility.

The monochromatic aesthetic of the Trainer appeals to those who prefer a minimalist look but still want a versatile shoe easily paired with workout attire or everyday wear. It’s also great for individuals who prefer ankle support since the Trainer has high-top options. The durable upper is designed to withstand high-impact training sessions, making these ideal for those who want a shoe you can beat up time and time again.

Who Shouldn’t Buy the NOBULL Trainer

The Trainer is not suitable for those who want a shoe that will also support mid and long-distance running since it does not have a substantially cushioned midsole. Those needing extra arch support may opt for shoes designed particularly for arch support since these can help relieve foot pain and maintain good posture.

These shoes may not be ideal for those who prefer a more vibrant multicolored aesthetic or want to create a customized design. Individuals on a tight budget may find the $129–$169 price tag on the higher end and opt for budget-friendly gym shoes.

Customer Reviews

The Trainer is rated 5/5 stars on the NOBULL website and, at the time of writing, has 14,482 reviews. It’s safe to say that people who wear these workout shoes like them, and many reviewers mention that their feet feel comfortable and supported while training. Verified buyer Sammy C. states, “I’ve been wearing NOBULL trainers for several years. They are the best shoes, in my opinion, for cross-training workouts. They last longer and feel better than other training shoes I’ve used in the past. I have not found a shoe that is as durable or comfortable.”

Critical feedback found in reviews states that these shoes feel stiff initially and need time to break in. There is also a mixed consensus on the fit—some say the Trainer fits too large or too small, while others say it fits true to size. Michael D. says, “I had to go a 1/2 size down from my regular shoe. They are a little stiff on the first wear, but after a week the shoe is very comfortable.”

Warranty and Return Policy

NOBULL offers a one-year warranty for the Trainer (and any other product purchased) that provides a refund, store credit or replacement for any item that is deemed defective. We contacted a customer service representative for more information on what is considered defective, and the NOBULL team member stated that it’s determined on a case-by-case basis and encouraged us to contact them with order information and pictures if the quality of a product isn't as expected.

The return policy states that the brand offers free returns and exchanges on products purchased within 60 days of delivery. Products must be unworn with all original tags attached (this does not apply to faulty products) to qualify for a refund. If you’ve received a defective product, you can contact a NOBULL representative for help using the live chat, via email at connect@nobullproject.com or by texting (617) 997-0588. Refunds are issued based on the original form of payment.

How the NOBULL Trainer Stacks Up Against Other Training Shoes

NOBULL Trainer vs. NOBULL Trainer+

The NOBULL Trainer+ has the same seamless SuperFabric upper and high carbon rubber outsole as the NOBULL Trainer, but there are some notable differences. The flat sole on the Trainer+ has a herringbone lug pattern with a deeper tread than the Trainer, and it has increased outsole dimensions to increase foot-to-ground contact for optimal stability. The midsole is EVA foam—different from the treated and molded EVA (phylon) used for the Trainer. Phylon tends to be less compressive than EVA, and the EVA midsole of the Trainer+ is thicker and offers more arch support.

The price for the Trainer+ is between $139 and $179, which is a little more than the Trainer, but a reasonable increase considering that it is a newer version. Overall, the Trainer has a more stable base and is more geared toward lifting, while the Trainer+ offers more traction and shock absorption for high-impact movements.

NOBULL Trainer vs. Nike Metcon 9

Like the NOBULL Trainer, the Nike Metcon 9 also offers a stable platform for lifting. Nike’s Hyperlift plate on the heel adds rigidity, helping you feel supported and connected to the ground while you lift. The rubber outsole extends from the midsole to the upper to keep your feet secure during multidirectional movements, but it is not high carbon rubber like the Trainer.

Both uppers have a mesh base—the Metcon 9 has a haptic print upper for visual texture and durability, and the Trainer has protective guard plates. Unlike the Trainer, the Metcon 9 is not water-repellant, so that may be something to consider if you like to train outdoors. The Metcon 9 costs $150, and you can create a customized pair for $180. Currently, NOBULL does not offer a customizable option.

NOBULL Trainer vs. Reebok Nano X3

The Reebok Nano X3 boasts a unique feature not found in the Trainer: a dome-shaped heel piece. This innovative design compresses during lifts to enhance stability and softens during impact, delivering a responsive and comfortable experience. The Floatride Energy Foam at the midsole is lightweight and feels responsive as you run. It also has a higher heel-to-toe drop than the Trainer—seven millimeters. Those who prefer a more natural foot position may opt for the Trainer, which has a 4-millimeter drop. The price for the Nano X3 ranges from $140-$160 depending on the color you get, and the Trainer starts at $129.

NOBULL Trainer vs. TYR CXT-1 Trainer

New(ish) to the training shoe market, the TYR CXT-1 was released in 2022, generating considerable excitement in the fitness community. The engineered mesh upper is sectioned off to provide support and flexibility, and overlays protect the high-traffic areas from wear and tear. While this may not be as durable as the Trainer’s protective guard plates, the CXT-1 has a wrap-around side gripper and an extended toe guard for extra support. With a nine-millimeter heel-to-toe drop and a stable heel, this shoe is ideal for those who prefer more support.

Both shoes have an anatomical toe box that allows space for natural toe splay, enhancing comfort and stability. The CXT-1 does not have a high carbon rubber outsole like the Trainer, but the lug pattern varies at the midfoot and other areas to help optimize grip and performance. Both are priced similarly, with the CXT-1 ranging from $129.99 to $150.00.

NOBULL Trainer FAQs

Can you squat in NOBULL trainers?

Yes, the NOBULL Trainer provides a stable base for both squats under load and bodyweight squats.

Can you walk in NOBULL trainers?

Yes, these shoes can be worn for walking outside the gym, from running errands to a pleasant evening stroll. However, we recommend getting shoes with a more cushioned midsole—such as memory foam shoes—if you plan on walking long distances or need shoes for standing all day.

Should I size up in NOBULL trainers?

According to NOBULL, “Our footwear and apparel is listed in standard US sizing and typically runs true to size. If you find that you are in between sizes in footwear, we recommend going half a size up to allow some space for movement and toe mobility.” We also recommend using the Size Guide on the product page.

Are NOBULL trainers good for running?

Yes, but only for short distances up to one mile. We recommend a cushioned running shoe for optimal comfort if you plan to run more.

Final Thoughts

The NOBULL Trainer is a durable shoe designed to withstand the rigors of training, whether you are an established athlete or a beginner. It has a high carbon rubber outsole with a grippy lug pattern for traction during lateral movements that extend on each side and the front for additional protection. The mesh upper keeps your feet cool and has a water-repellent coating to ensure a weather-resistant performance. 

These shoes also have a minimalist design—ideal for those who prefer a simple look. The low stack height and 4-millimeter drop maintain a close connection between your feet and the ground, making them well-suited for individuals who switch between strength training, high-impact exercises, and cardio-based activities.

Prices are accurate and items in stock as of publish time.