Magic Racerback Longline Sports Bra
Magic Racerback Longline Sports Bra
Size Guide
Bra Sizing Guide
Getting the right fit doesn't need to be hard, let us help you make sure you get the right fit.
Band Size
Okay — breathe in, then out, and hold. Wrap a tape measure around your chest at band level and take a look.
Odd number? Add 1. Even number? Add 2.
For example — if you measured 33” and add 1, you get 34”. This is your band size! We recommend measuring this part in Inches and converting it to CMs.
Cup Size
Breathe in again, then out, and hold.
1. Wrap a tape measure around the fullest part of your bust and take note.
2. Round to the nearest whole number. This is your bust size!
3. Subtract your band size from your bust size and voila! This determines your cup size.
For example — if your bust measured to 36, you would subtract 34 from 36 to get 2!
| INCHES | 1 | 2 | 3 | 4 | 5 | 6 |
| CUP SIZE | A | B | C | D | DD | DDD |
Put your band size and cup size together and now you have your bra size!
Our example comes out to be a 34B.
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Real support. Real comfort. Real freedom. All in one bra.
Finding Your Perfect Fit:
This sports bra runs true to size with a snug, supportive fit. The longline band should sit firmly below your bust without rolling or riding up. The longline band should sit firmly below your bust, staying smooth without rolling or riding up.
The racerback straps are made to stay in place and evenly distribute weight across your shoulders—secure but never digging. Built-in padding provides modest coverage and natural shaping for a flattering look and comfortable feel.
If you’re between sizes, size up for a little extra breathing room or size down for a more compressive fit. The right fit should feel supportive, balanced, and effortlessly comfortable all day long.
Description
Description
You know that sinking feeling when you're trying on yet another sports bra, hoping this one will be different? You tighten the straps enough to get support, but now they're cutting into your shoulders. You loosen them, and suddenly everything's bouncing. You try a tighter band for more hold, but now you literally can't breathe. And you're stuck wondering: why is it so hard to find a sports bra that just... works?
Here's what most brands won't tell you. The problem isn't you. It's that most sports bras are designed using the same tired "shrink it and pink it" approach—basically taking men's athletic wear, making it smaller, and slapping on some feminine Colours. They rely on simple compression (smashing everything down) and generic S/M/L sizing that completely ignores the fundamental relationship between band size and cup size. This forces you into an impossible choice: Do you want to breathe, or do you want support? Do you want your straps to stay put, or do you want them not to dig in? You shouldn't have to choose.
That's exactly why we engineered the Magic Racerback Longline Sports Bra differently. Instead of compression alone, we use an encapsulation design that lifts and separates—giving you real support without creating that dreaded uniboob or suffocating feeling. The longline band (not your shoulders) does 80% of the support work, anchoring everything in place so your straps never dig or slip. The racerback cut distributes weight evenly across your back and gives your ribcage room to expand fully. And the breathable nylon-spandex blend wicks sweat instantly, so you stay cool even during the toughest workouts.
Imagine this: You put on your sports bra in the morning, and you actually forget you're wearing it. No adjusting the straps at your desk. No peeling it off the second you walk through the door. No red marks, no pain, no fighting to catch your breath. Just comfortable, reliable support that moves with you—whether you're crushing a workout, running errands, or curled up on the couch. You look in the mirror and see a smooth, flattering silhouette. You feel lifted, supported, and confident. And you think: "This is what a sports bra should feel like."
Over 2,000 women have already made the switch, and they're never going back to their old bras. As one customer put it: "I didn't know sports bras could actually be comfortable until I tried this one. I wear it all day and forget it's even there." Another said: "Finally, a bra that supports me without suffocating me. The longline band is a game-changer—my shoulders don't hurt anymore."
You deserve a sports bra that works as hard as you do—without making you work against it. One that supports you, breathes with you, and moves with you. Every single day.
Fabric & Care
Fabric & Care
Materials & Construction
- Fabric Blend: 78% nylon, 22% spandex for maximum stretch, breathability, and moisture-wicking
- Padding: Non-removable bra pad for natural shaping and modest coverage
- Band: Extended longline design for superior support and anti-roll stability
- Straps: Wide, cushioned racerback straps for even weight distribution
- Construction: Seamless bonded edges and four-way stretch for unrestricted movement
Care Instructions
- Machine wash cold with like colors
- Use gentle cycle and mild detergent
- Do not bleach or use fabric softener
- Lay flat or hang to dry (do not tumble dry)
- Do not iron or dry clean
Pro Tip: Wash your sports bras after every 2-3 wears to maintain elasticity and freshness. Rotating between multiple bras extends their lifespan.
Shipping and returns
Shipping and returns
Shipping
We offer FREE Tracked shipping on orders over £25 📦
Orders below £25 will be charged a flat rate of £3.95.
We process orders between Monday and Friday. Please note that we require 2 to 3 working days on average to fulfill your order before dispatching it. Rest-assured we are doing everything in our power to get your order to you as soon as possible! Once your order is dispatched, depending on your country or region, estimated delivery time is between 4 to 10 business days. Please consider any holidays or global events that might impact delivery times.
Returns
We offer hassle-free returns to our nearest dispatch center. To start a return just contact our support team at support@magicbra.co.uk and we will make the process easy and effortless.
For health and hygiene reasons, we do not accept returns on undies or used items, and they are not eligible for refunds.
Why Buy From Us?
Why Buy From Us?
Size guide
Size guide
Getting the right bra fit is easy! Just follow these two simple steps.
Step 1: Find Your Underbust Measurement
- Ask a friend to help measure, or stand in front of a mirror.
- Relax your arms by your sides.
- Wrap a measuring tape snugly around your ribcage, just below your bust.
- Make sure the tape is straight and level all the way around.
- It's best to do this without a bra, or with a strapless, unpadded bra (make sure the tape isn't measuring over the bra itself).
- This measurement is your UNDERBUST size.
Step 2: Find Your Bust Measurement
- Put on a strapless, unpadded bra.
- Wrap the measuring tape around the fullest part of your bust (usually over your nipples).
- Hold the tape firm but not too tight, making sure it's straight across your back and parallel to the floor.
- This measurement is your BUST size.
Ask a question
Ask a question
Why You'll Love It From Day One
Racerback Support
Longline Anchor Band
Breathe & Move Freely
Smooth Back Profile
Natural Lift & Shape
Workout to Walkout
We Get These Questions A Lot
Supportive answers for your most common bra dilemmas.
Will Magic Bras actually support me — like, really support me?
Oh, 100%. Whether you’re a B cup or a G, Magic Bras are built to lift, shape, and hold you in — without squeezing or digging. They offer the kind of everyday support that moves with you, feels effortless, and still keeps everything right where it should be. You’ll feel the difference from the first wear.
Are they comfortable enough to wear all day?
Yep, that’s kind of our thing. We design every Magic Bra to feel like a second skin — breathable, soft, and smoothing in all the right places. No digging, no pinching, no “Can’t wait to take this off” energy. Just everyday confidence.
How do I know which style is right for me?
You don’t have to guess — that’s what we’re here for. From wireless comfort to sculpting support and everyday smoothing, we’ve got different styles to match what you need. Just check our fit guide or send us a quick message — we’ll help you find your favorite.
What makes it “magic” exactly?
It’s the way you feel when you wear it—and when you don’t have to think about it. Magic Bra lifts, smooths, and supports without the digging, tugging, or discomfort. You feel held, not restricted. That’s the kind of magic every woman deserves.
What if I’m between sizes or not sure what to get?
We’ve been there. Because sizing can vary between styles, we recommend checking The Fit section on each product page — it’s tailored for that specific bra. Our goal is to help you find a bra that feels like it was made just for you.
What’s your return policy? I’ve had bad luck with bras online.
Totally fair. If it’s not love at first wear, no worries. You’ve got 30 days to try it, and if it’s not working for you, just get in touch with us — we’ll help you sort it out. No drama, no pressure, no questions asked.
How should I wash and care for my Magic Bra?
Use this text to answer questions in as much detail as possible for your customers.
Because Magic Bra isn’t a promise — it’s proof. 75,000+ women wear it, love it, and say it’s the best switch they’ve made.
I didn't realize how bad my old sports bras were until I tried this one. It's like night and day.
I wore it hiking and forgot I was even wearing a bra. And trust me,that's rare for me.
Surprisingly holds up for everything except super high-impact workouts. For everyday wear,it's perfect.
The neckline is modest enough but still feminine. Perfect balance.
I love that I can wear it all day without getting those angry shoulder marks.
The black one creates such a sleek silhouette under clothes. Super flattering.
This bra doesn't fight me when I breathe deeply. I can expand my ribs fully and still feel supported.
The support is strong enough for medium-impact workouts without feeling like a straightjacket.
It doesn't roll up,even during stretching or bending. That alone deserves applause.
I've washed it several times and the fabric hasn't pilled or stretched out. Still looks brand new.
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