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| Size | Bust | Under Bust |
|---|---|---|
| AU 4 / XXS | 60-70 | 50-60 |
| AU 6 / XS | 70-80 | 60-70 |
| AU 8 / S | 80-90 | 70-80 |
| AU 10 / M | 90-100 | 80-90 |
| AU 12 / L | 100-110 | 90-100 |
| AU 14 / XL | 110-120 | 100-110 |
| AU 16 / 2XL | 120-130 | 110-120 |
| AU 18 / 3XL | 130-140 | 120-130 |
| Size | Bust | Under Bust |
|---|---|---|
| AU 4 / XXS | 24-28 | 20-24 |
| AU 6 / XS | 28-32 | 24-28 |
| AU 8 / S | 32-36 | 28-32 |
| AU 10 / M | 36-40 | 32-36 |
| AU 12 / L | 40-44 | 36-40 |
| AU 14 / XL | 44-48 | 40-44 |
| AU 16 / 2XL | 48-52 | 44-48 |
| AU 18 / 3XL | 52-56 | 48-52 |
* All measurements are guides only. From time to time some people might find that their perfect size does not line up with the size chart data.
Bust:
Wrap measuring tape around the fullest part of the bust, ensuring the measuring tape is sitting straight across the back when taking the measurements. Once the measuring tape is in position keep the arms relaxed and by the side.
Under Bust:
Wrap measuring tape around the ribcage, just below the bust, ensuring the measuring tape is sitting straight across the back when taking the measurements. Once the measuring tape is in a position keep the arms relaxed and by the side.
Hot Tips 🔥
- The measuring tape should fit closely around the body without squeezing in any way.
- If your bust and under bust measurements fall in different sizes, we recommend following the size of your under bust measurement.
Overall rating: 4.7265306 / 5 from 1225 reviews.
The Momentum Sports Bra - Open Air is highly praised for its soft and supportive fabric, adjustable straps, and perfect fit. Customers appreciate its great quality, amazing feel, and beautiful color, making it a popular choice for sports activities.
Review topics: ["size","fit","straps","support","length","fabric","material","colour","design","quality","looks","issues","feel","shape","comfort","addition","style","movement","cut","piece","padding","coverage","band","leggings","detail","comfy","neckline","shorts","clasp","shade"].
"I would usually buy a medium in sports bras but I am bigger busted and decided to size up because I had heard from friends the sizing was a little small. It fits great around the bust but the under band is a little loose, so I’d recommend sticking to your usual size. The fabric is SOOOO soft and for a thin strap it’s surprisingly supportive. Paired with the matching shorts it’s a gorgeous combo and I’ve had so many compliments on it. Would definitely recommend!"
"Have this style now in a 2x and a 3x and like both for different reasons!!! Love the 3x for having more room for breast tissue but the 2x gives more cleavage which honestly looks nice. Both are nice for different reasons but think I like the 3x the best as I have a larger bust . Only have a photo of the 2x."
"Absolutely love this sports bra! It's so comfy, super cute and really versatile. It provides the perfect amount of support for everyday wear and gym sessions, while still feeling soft and comfortable. Definitely one of my new favourites!"
"Looks really nice on and would be fine for low intensity but for anything high intensity I found it didn't provide enough coverage for me and I felt like I was spilling out the top."
"Love the colour nice fit. Don’t love the thin straps that’s why only giving it 4 stars"
"Love this Momentum Sports Bra, a good support bra. One i wear under a workout vest."
"I highly recommend this as your go to high impact bra Fit is amazing especially for bigger bust girls"
"I use this sports bra regularly and it is great for both football training and gym. It is super comfortable and great for everyday use as well."
"Hello , this top I worn at Sydney Hyrox July 2026 it was so comfortable, never had to adjust . I had this top on for at least 12 hours . Highly recommend Thank you"
"I would recommend this style sports bra. I have a small bust but was after something compressive and supportive. This is the best LSKD sports bra I found when trying on in store"
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