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The Motus Flex is debuting hot off of the heels of the release of the popular Vivobarefoot Motus Strength. Both of these models offer unique construction features to help them differentiate from one another and perform well in different training verticals.
For example, the Motus Strength offers a more rigid upper construction which makes it great for CrossFit and cross-training, while the Motus Flex has breaks in the outsole to increase its flexibility and a knit upper for breathability.
Like the Motus Strength, I don’t think the Motus Flex will be a barefoot shoe that everyone should run out and invest in. It’s one of those shoes that will either really resonate with one’s needs or be a complete miss — and I’ll explain why below.
What I Like
- Flows With Your Feet: For my mobility and movement-focused friends — think Animal flow — these are great. They remind me of a more sporty Wildling barefoot shoe. You get the flexible sole with breaks, but with a sportier upper.
- Comfortable and Low-Profile: If you love knit uppers in your shoes and enjoy going sockless with your barefoot shoes, these can be great. Unlike Vivo models like the Primus Lite Knit, this shoe’s knit is a lot more comfortable with less aggressive toe breaks for sockless use.
- Great for Lazy Lacers: For those on the market for a drawstring barefoot shoe that’s easy to slip on and off, this shoe also gets the job done. It’s easy to set and forget, and it stays secure enough to where you don’t have to constantly fidget with laces.
What I Don’t Like
- Not Ideal for Powerlifting: For powerlifting and more niche training contexts, this shoe’s performance can fall short. More specifically, this wouldn’t be the best barefoot shoe for powerlifting due to its upper lacking the rigidity to prevent spillover in things like sumo deadlifts.
- Higher Price Point: Their price point is high, which shouldn’t come as a surprise since it’s a Vivobarefoot model. Like the Motus Strength, this shoe costs around ~$200 which makes it one the more costly knit barefoot shoes.
- May Be Too Narrow for Some: These aren’t going to be the widest barefoot shoes on the market. They’ll be plenty wide for 3-E width feet and below, in my opinion, but if you’re 4E wide or constantly battle Vivobarefoot shoes due to their widths, this model won’t be any different.
Specs to Know
- Price: $200
- Heel-to-Toe Drop: 0mm
- Weight: 8.45 (size 10 model)
- Removable Insole: Yes
- Width: Wide (Should work for narrow to 3E widths)
- Sizing: True to Size, if you’re in between sizes — size down!
- Inov8 Bare-XF: Comparable Alternative
Who Should Buy This Shoe?
- Mobility-focused individuals.
- Anyone who wants a barefoot shoe for cross-training with some strength.
- Barefoot shoe lovers who love sock-like-fitting shoes.
- People who hate laces — joking, but not really.
- Warm climate dwellers.
Who Shouldn’t Buy This Shoe?
- Powerlifters and runners.
- Individuals with 4+ E-width feet.
- Anyone who lives in damp and cold climates.
Performance Overview
It was funny how when I put Motus Flex on, I naturally gravitated towards a specific style of training. I test all performance-focused barefoot shoes with the same protocol, and I’ll start to bias what I do in them based on feedback that I get from them.
How I’ve Tested the Motus Flex
- Lifting: 4.⅘ (max lifts: 275 lb lunge, 525 lb deadlift). For strength and hypertrophy workouts where you’re more static, this shoe works well. It can also handle some dynamic lifts depending on the lift and intensity.
- Cross-Training: 4.⅘. I really like the flexibility and comfort of this model for cross-training, but it will have some limitations as you get more intense with your jumps, cuts, and agility work.
- Running: 3.9/5. For sprints and short intervals, this shoe can work. I’d rather have a model with a more running-friendly upper to prolong long-term durability, though.
- Walking: 4.7/5. These are comfortable, flexible, and breathable. Not to mention, I’m lazy with my laces so the elastic drawstring lacing system is fantastic.
My Experiences Lifting and Cross-Training In the Motus Flex
The Motus Flex has been great for my sessions where I’m doing hypertrophy work and mobility-focused exercises. For example, on one of my lower body training days in my current block, I do the following:
- A1. Hatfield Split Squat
- B1. Side Step-Up
- B2. Single-Arm Kettlebell Swings
- C1. Lateral Lunge
- C2. Frontal Plane Landmine Swing
- C3. Copenhagen Plank
For this type of workout, the Motus Flex was clutch and worked exceptionally well. None of these movements are overly stressful in the context of needing upper security and the flexible sole was welcomed on the lateral lunges and Hatfield split squats.
I think if you’re doing more recreational lifting sessions which are more geared towards your standard strength, hypertrophy, and mobility work then you’ll enjoy this model’s performance.
The upper is secure enough for most of the demands that you’ll encounter in these work contexts and the flexible sole is awesome for single-leg training and dynamic work that you’ll hit with kettlebells.
I think where this shoe starts to fall short for lifting is when you’re doing things like sumo deadlifts or heavy low-bar or wider stance squats. This is when you’ll start to notice the upper giving way to the feet spreading the floor.
I picked up on this when working through some sumo tugs when I’m adapting a wider stance to passively work my hip mobility. Similar to lifting, this shoe will work for cross-training in most training contexts.
When doing box jumps, single-leg plyos, and jump rope, this model worked great. Basically, any form of dynamic exercise that has a more vertical orientation or is more moderate, this model will work great.
For skater strides and broad jumps where you’re pushing the upper’s security more, you may find that you slide a bit in this model. I noticed a little more spillover in the Motux Flex compared to its knit peers like the Primus Lite Knit, and I think that’s due to the Flex being softer.
Outside of these few examples, though, this shoe has been exceptional for my cross-training workouts and sessions where I blended strength and power exercises together. I could see these being fantastic for the kettlebell-focused athlete and lifter.
Are the Motus Flex Good for Running and Daily Wear?
For running, the Motus Flex is okay, but I wouldn’t rock these for runs that are longer than a couple of miles.
My rationale for this revolves around the higher price point and knit upper. Running can beat up shoes at a faster rate, and I think you’ll get more out of this model’s knit if you save them running excessive running stress.
On top of this, I find this model to run long like some of the Primus models, so from my experience, I found these to have kind of a floppy feel when running due to their extra length.
You can do short runs under a couple of miles in the Motus Flex, but for longer runs especially outdoors on varied terrain, I’d explore barefoot shoes more optimized for running.
If you do choose to run in your model, I’d keep your runs shorter and try to find a more dialed model for long outdoor runs or runs on trails with looser terrain like the Primus Trail Knit FG.
For daily wear and walking, the Motus Flex has been great and it has three features that make it solid in this context. First, the upper in this shoe is a lot more comfortable, and there isn’t an uncomfortable toe break like in other Vivobarefoot knit models.
This shoe is easy and comfortable to wear with or without socks, and that’s accounting for the fact that it will likely run long for most feet — because you know — it’s Vivobarefoot sizing.
Second, the lacing system is fantastic for giving you a quick means to slip this shoe on and off and the upper is secure enough for daily wear contexts. I keep mine a little looser when I’m wearing them out and about and for dog walks — it’s easier to slip on and off then.
Third and lastly, it has a nice sporty look to it without looking too “gym-my” so it can be styled well with things like Lululemon joggers when grabbing a coffee and going about your day.
It’s not going to be a barefoot shoe you can wear in business casual settings, but it has a clean enough look to be worn with athleisure apparel without looking too goofy clown-like, in my opinion.
Motus Flex vs Motus Strength
On the feet, the Motus Flex and Strength feel super different and the way you’ll use the gym will reflect this. The Motus Strength has a much heavier and more rigid upper which limits its breathability but increases its functionality for CrossFit.
To date, the Motus Strength has been my favorite barefoot CrossFit shoe for this reason because it’s the only model that adequately protects the feet and doesn’t break down super fast from burpees, handstand push-ups, and rope climbing.
The Motus Flex feels like the polar opposite with its lighter and stretchier knit/mesh upper and its Motus Flex outsole. It can feel like a sock at times, so if you want that feel with your shoes, go Motus Flex.
Performance Comparison Summary
- Better for Lifting: Motus Strength (tread is also grippier for lifting)
- Better for Cross-Training: Motus Flex
- Better for CrossFit: Motus Strength
- Better for Short Runs: Motus Flex
- Better for Daily Wear: Motus Flex
Motus Strength JJF
Motus Flex
Construction Details
The Motus Flex has some unique construction features and materials that make it a little more unique compared to other Vivobarefoot models. The features below are the big ones worth noting for this shoe.
- Motus Flex Outsole: This outsole has splits and breaks at the midfoot and forefoot to increase the flexibility that you get with this shoe.
- Mesh Upper: The upper is composed of a blend of Knit: RPET 86% + Elastane 3% + hot melt 11%, per Vivobarefoot’s site.
- Elastic Laces With Toggle: Like the upper, the laces are also composed of a blend of materials including recycled materials: Outside: 100% RPET/Inside: 100% Natural latex elastice.
- Ortholite Insole: Similar to other Vivobarefoot models, the Motus Flex utilizes the Ortholite insole which is composed of 98% recycled PU foam.
Final Thoughts, Would I Get These Again?
Probably not.
They’re cool shoes, but for the price, I don’t know if they’re worth it for everyone. If you have the means and fit into the sub-category of this model’s intended uses — then go forth, you’ll enjoy them.
However, if you’re someone like me who’s constantly battling if you should be spending that much on a pair of shoes like this, then you can find good shoes that will perform similarly for much less.
If you have more questions about the Motus Flex, drop a comment below or reach out to me via Instagram or on my YouTube channel!
Jennifer Scheibling
Hi Jake!
I was wondering what your experience is with these without socks? I sized down to get a better fit in the length but they are not comfortable with socks on. Because of the lack of tongue they are difficult to get on comfortably with socks and are too tight (I typically wear very thin wool blend socks). They feel super comfortable without socks, however, I have always worn my barefoot shoes with socks and am a little leery to keep these are this price point. I’m worried about rubbing and odor over time. Any thoughts from your experience with these?
Thanks,
Jennifer
I wear these a lot without socks, probably more so than not. These and my Feelgrounds Move have been my slip sockless pairs for the summer. My advice to help with that is to rotate them with your other shoes! That should prolong the runway of any potential odor, too. IMO, if you like em’ and have other models to swap in and out with then you should be fine!