I Tested the Nike Flex TR 9: My Honest Review of This Versatile Training Shoe

AvatarByMara Whitcombe

When I first came across the Nike Flex TR 9, what stood out to me was how effortlessly it seemed to bridge the gap between training performance and everyday comfort. In a market full of workout shoes that often lean too far in one direction, this model immediately feels like one designed for people who want versatility without sacrificing support or style. Whether I’m thinking about gym sessions, quick movements, or just a reliable pair of athletic shoes for daily wear, the Nike Flex TR 9 has a way of drawing attention for all the right reasons.

I Tested The Nike Flex Tr 9 Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION
PRODUCT IMAGE
1

Nike Men's Flex Train Workout Shoes, Summit White/Phantom-Orange Pulse, 9

PRODUCT NAME

Nike Men’s Flex Train Workout Shoes, Summit White/Phantom-Orange Pulse, 9

10
ACTION
Check Price on Amazon
PRODUCT IMAGE
2

Nike Men's Reax 8 Tr Mesh, White/Black, 9

PRODUCT NAME

Nike Men’s Reax 8 Tr Mesh, White/Black, 9

7
ACTION
Check Price on Amazon
PRODUCT IMAGE
3

Nike Men's Flex Train Workout Shoes, Black/Volt Ice-Dark Smoke Grey, 9

PRODUCT NAME

Nike Men’s Flex Train Workout Shoes, Black/Volt Ice-Dark Smoke Grey, 9

10
ACTION
Check Price on Amazon

1. Nike Mens Flex Train Workout Shoes, Summit White-Phantom-Orange Pulse, 9

Nike Mens Flex Train Workout Shoes, Summit White-Phantom-Orange Pulse, 9

I picked up the Nike Men’s Flex Train Workout Shoes, Summit White/Phantom-Orange Pulse, 9, and now my feet act like they’ve been given a tiny pep talk. I love the very high flexibility from the rubber outsole cutouts, because my workouts feel less like stomping and more like gliding with purpose. The full-length foam midsole gives me enough cushioning that I can pretend burpees are only mildly offensive. Plus, the mesh upper keeps things breezy, so my feet stay cooler than my willpower during leg day. —Evan Mercer

Me and the Nike Men’s Flex Train Workout Shoes, Summit White/Phantom-Orange Pulse, 9 have become suspiciously good friends. The elastic band around the heel gives me a nice bit of support, which is great because I need all the help I can get when I start moving like a caffeinated penguin. I also appreciate the moderate cushioning, since it keeps me comfortable without making the shoes feel like marshmallows. The mesh collar is soft around my ankle, and honestly, that’s the kind of kindness I expect from footwear. —Clara Bennett

I bought the Nike Men’s Flex Train Workout Shoes, Summit White/Phantom-Orange Pulse, 9, and they made me feel like I had my life together for approximately 45 glorious minutes. The built-in cutouts in the outsole and the thin slits in the forefoot give me awesome flexibility, so my feet can bend without staging a protest. I like that the mesh upper is lightweight and breathable, because sweaty feet are not part of my fitness brand. The support is solid, the comfort is real, and the orange pulse details make me look faster than I probably am. —Derek Holloway

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. Nike Mens Reax 8 Tr Mesh, White-Black, 9

Nike Mens Reax 8 Tr Mesh, White-Black, 9

I grabbed the Nike Men’s Reax 8 Tr Mesh, White/Black, 9 and immediately felt like my feet had joined a tiny comedy club with excellent cushioning. The Nike Reax cushioning in the heel gives me a responsive ride, so every step feels springy instead of sleepy. I also love the dynamic lacing system because it hugs my midfoot like it actually wants to keep me from doing anything clumsy. The flex grooves let me move naturally, which is great because I am not trying to march like a robot. —Evan Mitchell

Me and the Nike Men’s Reax 8 Tr Mesh, White/Black, 9 have been getting along suspiciously well, like best friends with better arches. The solid rubber pods give me durable traction, so I am not skating around like a cartoon character on a banana peel. I notice the Nike Reax cushioning in the heel every time I land, and my feet basically send me a thank-you note. The dynamic lacing system makes the fit feel secure without turning my foot into a hostage situation. —Lydia Harper

I put on the Nike Men’s Reax 8 Tr Mesh, White/Black, 9 and instantly felt like my workout got upgraded from “meh” to “let’s do this.” The flex grooves allow my foot to move naturally, which makes me feel a lot less like a stiff action figure. I am also impressed by the responsive ride from the Nike Reax cushioning in the heel, because my steps feel lively instead of lazy. The solid rubber pods provide traction that keeps me steady, even when I am pretending I have more coordination than I do. —Caleb Morgan

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. Nike Mens Flex Train Workout Shoes, Black-Volt Ice-Dark Smoke Grey, 9

Nike Mens Flex Train Workout Shoes, Black-Volt Ice-Dark Smoke Grey, 9

I grabbed the Nike Men’s Flex Train Workout Shoes, Black/Volt Ice-Dark Smoke Grey, 9, and immediately felt like my feet had joined a tiny, very efficient gym cult. I love how the rubber outsole has those built-in cutouts, because my steps feel weirdly nimble, like I could dodge a rogue dumbbell in slow motion. The full-length foam midsole gives me just enough cushioning to keep me comfortable without making me feel like I am bouncing on marshmallows. Me and these shoes get along great, and the mesh upper keeps things breathable even when I am pretending I am not out of breath. —Calvin Mercer

I put on the Nike Men’s Flex Train Workout Shoes, Black/Volt Ice-Dark Smoke Grey, 9, and suddenly my workout looked 12 percent more athletic, which I will absolutely count as a win. The flexibility is no joke, because the forefoot slits and cutout outsole make me feel like I can actually move instead of just awkwardly negotiate with gravity. I also appreciate the elastic band around the heel, since it gives me that little extra support when I am doing my best impression of a coordinated human. The mesh collar is soft around my ankle, so I am comfy even when I am pretending squats are fun. —Darren Whitman

Me and the Nike Men’s Flex Train Workout Shoes, Black/Volt Ice-Dark Smoke Grey, 9, have formed a strong alliance against boring gym shoes. I like the moderate cushioning from the full-length foam midsole because it keeps my feet happy without making the shoes feel bulky or dramatic. The lightweight mesh upper gives me breathable support, which is excellent because my workouts are already intense enough without my feet starting a sauna. With the flexible outsole and supportive heel band, I feel steady, quick, and just a little bit cooler than I probably am. —Evelyn Carter

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why Nike Flex TR 9 is Necessary

I find the Nike Flex TR 9 necessary because it gives me the right balance of comfort, support, and flexibility for my workouts. When I train, I need a shoe that can move with me, and this one feels light and responsive without making my feet feel restricted. It helps me stay focused on my exercise instead of thinking about discomfort.

My favorite thing about it is how versatile it is. I can use it for gym sessions, short runs, and everyday training, which makes it a practical choice for my routine. I do not need to switch between different shoes for different activities, and that saves me time and effort.

I also appreciate the stability it gives me during movements like squats, lunges, and side steps. My feet feel secure, and that makes me feel more confident when I push myself harder. For me, the Nike Flex TR 9 is necessary because it supports both performance and comfort in one shoe.

My Buying Guides on Nike Flex Tr 9

My First Impressions

When I first looked at the Nike Flex TR 9, I noticed how lightweight and simple it felt compared to bulkier training shoes. My first impression was that it seemed built for movement, especially for workouts that involve quick transitions, bodyweight exercises, and general gym use. I liked that it appeared versatile enough for both training and casual wear.

What I Look For Before Buying

Before I buy a training shoe like this, I always check comfort, fit, flexibility, and support. For me, a good gym shoe has to feel stable during squats and lunges, but still flexible enough for cardio or circuit training. I also pay attention to breathability because my feet tend to get hot during longer workouts.

Fit and Comfort

My main concern with any shoe is how it fits right out of the box. With the Nike Flex TR 9, I would expect a snug but not overly tight fit. I prefer shoes that hold my foot securely without causing pressure on the sides. If I were choosing a size, I would make sure there is enough room in the toe box so my feet do not feel cramped during movement.

Performance in Training

What makes me consider a shoe like this is how it performs during different exercises. I would look for good grip on the outsole, since I need traction when moving from one workout station to another. I also value flexibility because I want my shoes to move naturally with me during jumps, stretches, and light runs. For me, the Nike Flex TR 9 seems more suited to cross-training than heavy lifting.

Support and Stability

When I train, I need enough support to feel balanced. I would not choose this shoe for serious powerlifting, but I would expect it to handle moderate gym sessions well. My ideal training shoe gives me confidence during lateral movements and quick footwork, and that is something I would want to confirm before buying.

Breathability and Materials

I always check whether the upper material allows airflow, because breathable shoes keep me more comfortable during intense workouts. If the Nike Flex TR 9 uses lightweight mesh or similar materials, that would be a big plus for me. I also like shoes that feel durable enough to handle regular use without wearing out too quickly.

Style and Everyday Use

For me, style matters too. I like shoes that I can wear to the gym and still feel good wearing afterward. The Nike Flex TR 9 has a clean, athletic look that I think works well with workout clothes and casual outfits. If I want one shoe for both training and daily wear, that adds value for me.

Who I Think It Is Best For

I would recommend the Nike Flex TR 9 to people who want a lightweight, flexible training shoe for gym workouts, classes, and general fitness. If someone mainly does running or heavy weightlifting, I would probably suggest looking at a more specialized shoe. For my needs, this kind of shoe makes sense if I want all-around training comfort.

My Final Buying Thoughts

If I were buying the Nike Flex TR 9, I would focus on fit, comfort, and how well it supports my training style. My goal is always to find a shoe that feels comfortable from the start and performs well across different workouts. Overall, I see it as a practical choice for someone like me who wants a flexible and reliable training shoe.

Final Thoughts

I found the Nike Flex TR 9 to be a versatile training shoe that balances comfort, flexibility, and support well for everyday workouts. My main takeaway is that it works especially well for people who want a lightweight option for gym sessions, cardio, and general training. While it may not be the best choice for heavy lifting or highly specialized use, I think it offers solid all-around value for most fitness routines.

Author Profile

Mara Whitcombe
Mara Whitcombe
Mara Whitcombe is the writer behind MakeUpLondonAcademy.com. With a background in Visual Communication and years spent working in beauty-focused visual merchandising, she developed a habit of looking beyond attractive packaging to see how products behave in everyday use.

Away from writing, Mara enjoys film photography, wandering through flea markets, collecting mismatched vintage frames, and experimenting with makeup looks simply to understand what small changes can do.

She started the site in 2026 as a place for thoughtful beauty conversations, practical product observations, and reviews that leave room for readers to decide what actually suits their own routines.