Finding a sports bra that genuinely feels supportive, flattering and comfortable can be harder than choosing your trainers. If you’re active outdoors, in the gym or just love living in athleisure, a well-fitting medium support bra is one of the most important pieces in your wardrobe.
Why a medium support sports bra suits most active women
Medium support sports bras hit the sweet spot for many women who mix gym sessions, classes and outdoor adventures. They’re designed to reduce bounce during moderate-impact movements without feeling like body armour.
Think about how you move in a typical week. Maybe it’s strength training, spin, brisk walks, hikes, yoga and the odd 5K. For that kind of routine, a medium support bra offers enough control while still letting you breathe and move freely.
The SWEATY BETTY Women’s Power Medium Support Sports Bra is a good example of this versatile category. Built with a 4-way stretch fabric and a sleek, adjustable T-bar back, it’s designed to balance support and comfort instead of locking you into a rigid, compressive shell. If you want to dive deeper into how it performs, you can read our full review of the Sweaty Betty Women’s Power Medium Support Sports Bra.
Key features to look for in a medium support bra
Not all medium support bras are created equal. Here are the features that really matter when you’re comparing options.
Supportive structure without bulk
A good medium support bra should hold you firmly enough that you feel stable on the move, but not so tightly that you’re desperate to take it off the second you get home. The Power bra uses a combination of 4-way stretch and a flattering scoop neck with looped, adjustable straps to keep things in place.
Look out for:
- A snug, non-riding band that stays level around your body
- Straps that don’t slip but also don’t dig into your shoulders
- Enough coverage at the front and sides so you feel secure in all positions
Technical fabric that can keep up with your training
If you’re working hard, your sports bra needs to deal with sweat just as well as your top or leggings. The Power bra is built from a blend of 62% polyamide and 38% elastane, giving it that stretchy, sweat-wicking and quick-drying performance feel.
When choosing, prioritise:
- Sweat-wicking fabrics that pull moisture away from your skin
- Quick drying so you don’t stay damp after a tough set or hill sprint
- Shape retention – the bra should spring back after you stretch it
Adjustability for a custom fit
Loads of the comfort (or discomfort) in a sports bra comes down to tiny fit tweaks. The more you can adjust, the easier it is to dial things in for your body.
The Power sports bra uses adjustable straps and an adjustable T-bar design at the back. This lets you alter how high the straps sit and how the weight is distributed across your shoulders. If you’re between sizes or your body changes over time – which it naturally does – that adjustability becomes invaluable.
Design that works with the rest of your kit
Style may not affect performance, but it does affect how often you’ll actually wear something. The Power bra’s scoop neck and sleek contour seam lines are designed to match the brand’s Power High Waist Leggings, making it easy to build a coordinated gym or outdoor outfit.
When you’re planning your kit, think about how the bra will sit under tank tops, vests and tees. A T-bar back like this works especially well under racers and gym vests such as the Sweaty Betty Women’s Power Texture Medium Impact Gym Vest, keeping straps neatly hidden while still giving you full movement through the shoulders.
Getting the right size: why you might need to size down
One of the most common reasons sports bras feel disappointing is simple: the size is off. Medium support depends heavily on getting that band and strap fit just right.
With the Power bra, it’s recommended to size down for the best fit. In practice, that usually means:
- If you’re between sizes, pick the smaller one first.
- If your regular everyday bra is a little loose on the band, consider dropping a band size.
When you try it on, run through a quick fit check:
- Lift your arms overhead – the band shouldn’t ride up.
- Jog gently on the spot – you should feel contained with minimal bounce.
- Take a deep breath – you should feel snug, not restricted.
If you want more real-world feedback on how the sizing plays out, you can always read our full review of the Power Medium Support Sports Bra for fit notes and observations from testing.
Matching your sports bra to your workout
Medium support is a broad category. How suitable it is really depends on what you’re doing and your body.
Strength training, Pilates and yoga
For lifting, Pilates, yoga and mobility work, the Power bra’s combination of 4-way stretch and moderate support is a natural fit. You get enough control in dynamic movements without feeling compressed when you’re breathing deeply or twisting into a stretch.
Gym classes and circuits
For circuit training, boot camps and most studio classes, medium support gives you the balance between security and comfort. Because the Power bra has an adjustable T-bar strap and removable pads, you can tweak the feel depending on what you’re doing – tighten things up a touch for burpees, or loosen slightly for lower-intensity sessions.
Running and higher-impact work
For some women, a medium support bra will be fine for shorter runs, especially in smaller cup sizes. For others, you might want to keep a separate high-support option specifically for running or very dynamic HIIT sessions, using a bra like the Power for everything else.
If you primarily run but also do gym and yoga, think of medium support as your everyday training bra, and high support as your race-day or interval-training piece.
The Sweaty Betty Power ecosystem: bras, tanks and more
One benefit of choosing the Power sports bra is that it sits within a wider Sweaty Betty Power line-up. If you enjoy matching sets or just like gear that’s designed to work together, the Power range offers several options.
Power Medium Impact Tank Top
If you like integrated outfits, the SWEATY BETTY Women’s Power Medium Impact Tank Top blends a medium-support built-in bra with a streamlined tank. It’s a neat choice if you prefer fewer layers or don’t enjoy juggling bra straps under tops. For more detail on how this tank performs in practice, take a look at our full review of the Sweaty Betty Power Medium Impact Tank Top.
Power Texture Medium Impact Gym Vest
The Women’s Power Texture Medium Impact Gym Vest is another option sitting in that medium-support space, but with a textured finish and vest styling. It’s aimed at those who want support plus a bit more coverage than a classic bra. If you like the idea of a Power set but prefer a vest silhouette, check our thoughts in the Power Texture Medium Impact Gym Vest review.
SB W PWR M SUP BRA – variant within the same family
The SWEATY BETTY SB W PWR M SUP BRA sits very close to the hero Power bra, occupying a similar medium support niche. It’s a sensible alternative if you find one cut fits your frame slightly better than the other – small differences in strap shape or coverage can make a big difference to how secure you feel. For side-by-side impressions, have a read of our review of the SB W PWR M SUP BRA.
Layering pieces: sweatshirts and shorts
Once you’ve sorted your base support, layering becomes much easier. The SWEATY BETTY Women’s After Class Funnel Neck Sweatshirt is designed to throw on over your sports bra after training. Its relaxed, cosy cut works well if you’re heading out into cooler air post-workout or warming up on a crisp morning. You can see how it performs as a layer in our After Class Funnel Neck Sweatshirt review.
For bottoms, the SWEATY BETTY Women’s Revive Boxy Shorts pair naturally with the Power bra for summer training or indoor classes. Their loose, boxy cut complements the closer feel of the bra, giving you freedom of movement below the waist. If you’re building a mix-and-match kit, the Revive Boxy Shorts review is worth a look.
Comparing the Power bra with alternative options
If you’re still deciding where the Power bra sits among your choices, it can help to compare its role in a typical wardrobe.
- Power Medium Support Sports Bra: Standalone bra with adjustable T-bar straps and removable pads, aimed squarely at medium-impact training where you want freedom and support in equal measure.
- Power Medium Impact Tank Top: Built-in support with tank coverage – good for minimal layering and those who prefer a more streamlined top-and-bra combo.
- Power Texture Medium Impact Gym Vest: Medium support with a more substantial vest silhouette and textured finish, ideal if you like the Power feel but want more coverage or a different aesthetic.
- SB W PWR M SUP BRA: Very similar role to the Power bra, making it a good alternative if tweaks in cut and styling work better for your shape.
Think about how each piece fits into your own training routine and what you’re most likely to reach for on a busy weekday morning. For some, the hero Power bra will be the go-to under everything. For others, a tank or vest might make pre-class outfit decisions quicker and simpler.
Caring for your sports bra so it keeps its support
A medium support bra only works if it stays supportive. Over time, sweat, heat and repeated washing can break down the elastic and fabric structure if you’re not careful.
To keep your Power bra – or any comparable piece – in good condition:
- Wash cool and gentle: Use a cool, gentle machine cycle or hand wash to protect the 4-way stretch.
- Avoid fabric softener: It can clog sweat-wicking fibres and damage elastane, reducing support.
- Air dry: Skip the tumble dryer and let it air dry flat or on a rack to preserve elasticity.
- Rotate bras: If you train several times a week, rotate two or three bras to let each one fully dry and recover.
Over time, you’ll notice when a bra starts to lose its snap – the band feels looser, you’re tightening straps more often and bounce increases. At that point, it’s worth replacing it, especially for higher-impact sessions.
Building a versatile training wardrobe around your bra
A well-chosen medium support sports bra is the foundation of a flexible training wardrobe. Once you have a bra like the Power dialled in, it becomes easier to choose the layers around it: cropped tanks for hot-weather runs, breathable vests for the gym, cosy sweats for recovery days and shorts or leggings to suit the season.
The Sweaty Betty Power range – including the hero Power bra, matching tanks and vests, plus layers like the After Class Funnel Neck Sweatshirt and Revive Boxy Shorts – is designed to mix and match while keeping fit and fabric feel fairly consistent. That makes it easier to pick outfits quickly, knowing they’ll perform similarly across your week.
If you want a deeper dive into how the SWEATY BETTY Women’s Power Medium Support Sports Bra feels in real training, from gym floors to outdoor sessions, follow up with the dedicated hands-on write-up and read our full review of the Power Medium Support Sports Bra before you decide.