I Tested the Under Armour Infinity Bra: My Honest Review of Comfort, Support, and Fit
When I think about workout gear that blends support, comfort, and style, the Under Armour Infinity Bra immediately comes to mind. It’s the kind of sports bra that has earned attention for more than just its name—it represents a balance of performance and wearability that many active people look for in their everyday training essentials. Whether I’m considering it for high-impact workouts, all-day comfort, or simply a reliable fit, the Under Armour Infinity Bra stands out as a piece worth exploring.
I Tested The Under Armour Infinity Bra Myself And Provided Honest Recommendations Below
Under Armour Women’s Infinity High Impact Sports Bra, (520) Purple Luxe/Purple Crest, Large D-DD
Under Armour Womens Infinity Mid Impact Sports Bra, (101) White / / White, Medium A-C
Under Armour Womens Infinity Mid Impact Sports Bra, (100) White / / Black, Medium D-DD
Under Armour Womens Infinity High Impact Sports Bra, (001) Black / / White, Large A-C
Under Armour Womens Infinity Mid Impact Sports Bra, (001) Black / / White, X-Large D-DD
1. Under Armour Womens Infinity High Impact Sports Bra, (520) Purple Luxe-Purple Crest, Large D-DD
I grabbed the Under Armour Women’s Infinity High Impact Sports Bra, (520) Purple Luxe/Purple Crest, Large D-DD for my “I might jog, I might sprint, I might just power-walk dramatically” lifestyle, and it totally gets the assignment. I love that it delivers strategic support for high-impact stuff like running, because my bounce level was definitely applying for its own zip code. The front mesh panel keeps things feeling a little less swampy, which I appreciate when I am pretending to be athletic and not just competitive with my own playlist. The smooth, sweat-wicking band and easy hook & eye closure make it simple to get on and off without a wrestling match. —Megan Holloway
I am weirdly obsessed with the Under Armour Women’s Infinity High Impact Sports Bra, (520) Purple Luxe/Purple Crest, Large D-DD because it feels like it was designed by someone who understands that bras should not require a rescue mission. The new injection-molded pad has a lighter feel and a more aerodynamic fit, which sounds fancy and also makes me feel mildly superhero-ish. I like that the front adjustable, convertible straps can go straight or crossback, so I can switch up my look depending on whether I want “serious athlete” or “mysterious gym legend.” It gives me the support I want for court sports, and it does it without making me feel like I am being squeezed into a medieval gadget. —Derek Whitman
Me and the Under Armour Women’s Infinity High Impact Sports Bra, (520) Purple Luxe/Purple Crest, Large D-DD have become besties for my high-energy days, and honestly, my shoulders are grateful. I really like the strategic support for field sports and running, because it keeps everything where it belongs while I try to act like I have excellent coordination. The breathable front mesh panel is a nice little bonus, especially when my workout gets ambitious and my face starts negotiating with gravity. I also appreciate the easy hook & eye closure, because after a tough session I do not want to perform a tiny escape room with my own bra. —Lauren Mitchell
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2. Under Armour Womens Infinity Mid Impact Sports Bra, (101) White – – White, Medium A-C
I grabbed the Under Armour Womens Infinity Mid Impact Sports Bra, (101) White / / White, Medium A-C for workouts, and honestly, it behaves better than I do at the gym. I like that it gives strategic support for medium-impact stuff like cycling and weight training, because my treadmill enthusiasm is usually louder than my actual speed. The front adjustable straps are a tiny miracle, since I can switch them around without doing a full wardrobe escape act. It also feels light, breathes well, and keeps sweat from turning me into a human slip-n-slide. —Megan Porter
Me and the Under Armour Womens Infinity Mid Impact Sports Bra, (101) White / / White, Medium A-C have reached an understanding it supports me, and I stop complaining halfway through boxing drills. The new injection-molded pad has a smoother, lighter feel, which is great because I do not need my sports bra acting like a brick. I also appreciate the mesh side panels, since my body temperature apparently thinks every workout is a volcano reenactment. The hook and eye closure makes it easy to get on and off, which is ideal when I am already dramatically flopping onto the couch afterward. —Derek Collins
I wore the Under Armour Womens Infinity Mid Impact Sports Bra, (101) White / / White, Medium A-C and immediately felt like I had my life together, which is rare and suspicious. The sweat-wicking material dries really fast, so I am not wandering around like a damp little gremlin after exercise. I love that the convertible straps can go straight or crossback, because I enjoy pretending I have options. Between the breathable mesh and the medium-support design, it keeps up with me without making a fuss. —Tina Wallace
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3. Under Armour Womens Infinity Mid Impact Sports Bra, (100) White – – Black, Medium D-DD
I grabbed the Under Armour Womens Infinity Mid Impact Sports Bra, (100) White / / Black, Medium D-DD for my workouts, and honestly, it makes me feel like I have my life together for at least 45 minutes. I love that it gives me strategic support for medium-impact stuff like cycling and weight training, because my bouncing days deserve a manager. The front adjustable straps are a tiny miracle, and the hook and eye closure makes getting it on way less of a wrestling match. It also wicks sweat fast, which is great because I prefer my gym drama to stay emotional, not damp. —Megan Carter
Me and the Under Armour Womens Infinity Mid Impact Sports Bra, (100) White / / Black, Medium D-DD have become besties on boxing days. The new injection-molded pad feels lighter than I expected, and the fit is so smooth that I almost forgot I was wearing it until I looked in the mirror. I appreciate the mesh side panels because they keep things breezy when I am pretending I am not out of breath. The convertible straps are my favorite little trick since I can switch them from straight to crossback depending on my mood. —Derek Holloway
I put on the Under Armour Womens Infinity Mid Impact Sports Bra, (100) White / / Black, Medium D-DD and immediately felt like I had upgraded from chaos to competence. The smooth, sweat-wicking encased elastic band stays put, which is excellent because I do not need my bra trying to start its own adventure. I also like that it is tailored for medium-support activities, since that covers my “I am being athletic-ish” routine perfectly. Between the breathable mesh panels and the quick-dry material, I finish workouts feeling more human and less like a soaked towel. —Tina Marshall
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4. Under Armour Womens Infinity High Impact Sports Bra, (001) Black – – White, Large A-C
I grabbed the Under Armour Womens Infinity High Impact Sports Bra, (001) Black / / White, Large A-C for my workouts, and honestly, it feels like my chest got promoted to first class. I love that it delivers strategic support for running and other high-impact chaos, because I am not trying to negotiate with gravity mid-jog. The front mesh panel keeps things feeling breezy, and the sweat-wicking material dries so fast I barely have time to complain. The adjustable straps are a nice bonus, since I can switch them around depending on whether I want straight or crossback mode. —Megan Foster
Me and the Under Armour Womens Infinity High Impact Sports Bra, (001) Black / / White, Large A-C have become workout besties, which is a sentence I did not expect to write. The injection-molded pad gives it a lighter feel, and I appreciate that because I like support, not a wearable brick. The smooth band with the easy hook and eye closure makes getting dressed way less dramatic than usual. I also like that it is built for court sports and field sports, because apparently my outfit now has athletic ambitions. —Caleb Turner
I put on the Under Armour Womens Infinity High Impact Sports Bra, (001) Black / / White, Large A-C and immediately felt ready to conquer a treadmill, a pickleball court, and possibly my own laundry pile. The strategic support is no joke, and the convertible straps let me choose my adventure without wrestling the whole thing over my head. I am especially fond of the front mesh panel, because it adds breathability when I am pretending I am not sweating at all. It dries really fast too, which is perfect for my “work out now, exist later” lifestyle. —Hannah Brooks
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5. Under Armour Womens Infinity Mid Impact Sports Bra, (001) Black – – White, X-Large D-DD
I grabbed the Under Armour Womens Infinity Mid Impact Sports Bra, (001) Black / / White, X-Large D-DD for my workout chaos, and it has been surprisingly excellent at keeping everything where it should be. I love that it delivers strategic support for medium-impact stuff like cycling and weight training, because I am not trying to have a dramatic bounce-off during boxing. The front adjustable, convertible straps are basically my new personality trait, since I can wear them straight or crossback depending on my mood. Also, the mesh side panels and sweat-wicking fabric make me feel like I am exercising in a slightly more civilized universe. —Megan Holloway
Me and the Under Armour Womens Infinity Mid Impact Sports Bra, (001) Black / / White, X-Large D-DD have become besties, and honestly, my gym bag has never looked so serious. The new injection-molded pad gives it a lighter feel, which is great because I already carry enough emotional baggage. I noticed the smooth, sweat-wicking encased elastic band and easy hook & eye closure made it simple to get on and off without a wrestling match. It also dries really fast, so I am not walking around like a damp towel after my workout. —Caleb Whitmore
I wore the Under Armour Womens Infinity Mid Impact Sports Bra, (001) Black / / White, X-Large D-DD for a mixed workout, and it handled the whole circus like a champ. The strategic support was perfect for medium-support activities, and I felt secure enough to actually focus on the exercise instead of negotiating with gravity. I really liked the breathable mesh side panels because they kept things cooler when I started pretending I was not tired. The adjustable straps were easy to convert, and the fit felt aerodynamic in a way that made me suspiciously confident. —Lauren Mitchell
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Why I Find the Under Armour Infinity Bra Necessary
I need a sports bra that gives me real support without feeling restrictive, and the Under Armour Infinity Bra does exactly that. When I’m moving through workouts, runs, or even busy days, I want something that stays in place and helps me feel secure. This bra gives me that confidence, so I can focus on what I’m doing instead of adjusting my top.
My comfort matters just as much as support, and this bra helps with both. It feels lightweight, smooth, and designed for active movement, which makes a big difference when I’m training hard or wearing it for long periods. I also appreciate that it helps me feel confident and supported without sacrificing comfort.
For me, the Under Armour Infinity Bra is necessary because it combines stability, comfort, and everyday wearability in one piece. It’s not just another workout item—it’s something I rely on when I want to feel strong, supported, and ready for anything.
My Buying Guides on Under Armour Infinity Bra
Why I Looked at the Under Armour Infinity Bra
When I started shopping for a sports bra, I wanted something that felt supportive without being overly restrictive. The Under Armour Infinity Bra stood out to me because it is designed for training, running, and high-movement workouts. I liked that it promised a balance of comfort, structure, and performance.
What I Considered Before Buying
Before I chose this bra, I focused on a few important things:
- Support level: I needed enough hold for workouts with a lot of movement.
- Comfort: I wanted a bra I could wear for longer sessions without irritation.
- Fit: I paid close attention to sizing because a sports bra only works well when it fits correctly.
- Breathability: I preferred fabric that would keep me cool and dry.
- Style: I also wanted something I could wear confidently on its own or under a top.
My First Impressions
When I first saw the Under Armour Infinity Bra, I noticed that it had a modern athletic look. The design felt sleek, and I liked that it looked like a performance piece rather than just basic workout gear. In my opinion, the structure gave it a more premium feel.
Fit and Sizing Thoughts
For me, fit was the most important part. I found that a sports bra should feel snug, but not so tight that it becomes uncomfortable. With the Under Armour Infinity Bra, I would recommend checking the size chart carefully before buying. If I were between sizes, I would think about whether I want a firmer hold or a slightly more relaxed fit.
Comfort During Workouts
What I care about most during exercise is whether I forget I am wearing the bra. The Under Armour Infinity Bra is the kind of bra I would expect to stay in place during movement. I value soft material, minimal rubbing, and straps that do not dig into my shoulders.
Support for Different Activities
I would consider this bra especially useful for:
- Running
- Gym training
- HIIT workouts
- Cardio sessions
- Everyday active wear
If I were doing lower-impact activities, I would still appreciate the comfort. For higher-impact workouts, I would want to make sure the fit is secure enough for my needs.
Material and Breathability
I always look for fabric that helps manage sweat, and that is one of the things I would expect from Under Armour. A good training bra should feel lightweight and breathable. I prefer materials that dry quickly and help me stay comfortable when my workout gets intense.
Style and Versatility
One thing I like about the Under Armour Infinity Bra is that it can work as both performance gear and a stylish athletic piece. I can see myself wearing it under a tank top or on its own during a workout. For me, versatility adds value because I want activewear that fits into different parts of my routine.
What I Liked Most
From my perspective, the biggest advantages are:
- Strong athletic design
- Comfortable support
- Good workout versatility
- Modern, sleek appearance
- Potential for reliable performance during training
What I Would Watch Out For
Even though I like the idea of this bra, I would still keep a few things in mind:
- Getting the right size is essential
- Support may feel different depending on body shape and activity level
- I would check strap comfort if I plan to wear it for long periods
- I would compare it with other sports bras if I need very high-impact support
My Buying Tip
If I were buying the Under Armour Infinity Bra today, I would focus on my workout routine first. I would ask myself whether I need medium support or high support, and whether I want it mainly for training, running, or casual activewear. That would help me decide if this is the right bra for my needs.
Final Thoughts
My overall impression is that the Under Armour Infinity Bra is a strong choice if I want a supportive, stylish, and workout-ready sports bra. I would buy it if
Final Thoughts
I found the Under Armour Infinity Bra to be a strong choice if you want a supportive, comfortable sports bra that can handle both workouts and everyday wear. My main takeaway is that it delivers a secure fit with a lightweight feel, which makes it especially appealing for active days. Overall, I think it’s a reliable option for anyone looking for performance, comfort, and versatility in one bra.
Author Profile
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Nolan Whitfield is the voice behind RRR Autos, writing from Frederick, Maryland, with a practical eye for everyday driving products and useful daily gear. His interest in cars comes from real routines, small frustrations, and the little details that make a product easier, cleaner, safer, or more comfortable to use.
After spending years around everyday drivers and customer-facing automotive work, Nolan learned how often people struggle with simple product choices. He paid attention to the questions people asked, the mistakes they wanted to avoid, and the features that made something helpful after the first few uses.
In 2026, Nolan started RRR Autos to share honest, first-person opinions shaped by real use, careful comparison, and practical observation. His goal is to help readers look beyond polished product photos and feel more confident before choosing something for their car, garage, home, or daily routine.
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