• BUY 2, GET THE 3RD FREE · FREE UK DELIVERY

    • Shop Free Size Swap FAQ Contact
    0
    0

    Cart (0)

    Free tracked UK delivery · Free Size Swap · 14-day returns

    Estimated total

    £0
    Visa Mastercard Apple Pay Google Pay Shop Pay

    Your cart is empty
    • The X-Back Posture Bra in Black, front view with front fastening
    • The X-Back Posture Bra in Black, back view showing the X-shaped support panel
    • The X-Back Posture Bra in Beige, front view
    • The X-Back Posture Bra in Leopard, close-up of the moulded cups and front clasp
    • The X-Back Posture Bra in Leopard, side view
    • The X-Back Posture Bra in Leopard, showing the wide adjustable straps
    • The X-Back Posture Bra in Pink Leopard, worn, front view
    • The X-Back Posture Bra in Pink Leopard
    • Detail of the three-row front hook fastening
    • Detail of the moulded cup fabric
    • The X-Back Posture Bra in Black, front view with front fastening
    • The X-Back Posture Bra in Black, back view showing the X-shaped support panel
    • The X-Back Posture Bra in Beige, front view
    • The X-Back Posture Bra in Leopard, close-up of the moulded cups and front clasp
    • The X-Back Posture Bra in Leopard, side view
    • The X-Back Posture Bra in Leopard, showing the wide adjustable straps
    • The X-Back Posture Bra in Pink Leopard, worn, front view
    • The X-Back Posture Bra in Pink Leopard
    • Detail of the three-row front hook fastening
    • Detail of the moulded cup fabric
    • The X-Back Posture Bra in Black, front view with front fastening
    • The X-Back Posture Bra in Black, back view showing the X-shaped support panel
    • The X-Back Posture Bra in Beige, front view
    • The X-Back Posture Bra in Leopard, close-up of the moulded cups and front clasp
    • The X-Back Posture Bra in Leopard, side view
    • The X-Back Posture Bra in Leopard, showing the wide adjustable straps
    • The X-Back Posture Bra in Pink Leopard, worn, front view
    • The X-Back Posture Bra in Pink Leopard
    • Detail of the three-row front hook fastening
    • Detail of the moulded cup fabric
    • The X-Back Posture Bra in Black, front view with front fastening
    • The X-Back Posture Bra in Black, back view showing the X-shaped support panel
    • The X-Back Posture Bra in Beige, front view
    • The X-Back Posture Bra in Leopard, close-up of the moulded cups and front clasp
    • The X-Back Posture Bra in Leopard, side view
    • The X-Back Posture Bra in Leopard, showing the wide adjustable straps
    • The X-Back Posture Bra in Pink Leopard, worn, front view
    • The X-Back Posture Bra in Pink Leopard
    • Detail of the three-row front hook fastening
    • Detail of the moulded cup fabric

    Size guide

    Find your usual UK band (row) and cup (column). Between two sizes or a fuller bust? Go up one.

    BandBCDDDE
    32———SS
    34SSSMM
    36MMMLL
    38LLLXLXL
    40XLXLXL2XL2XL
    422XL2XL2XL3XL3XL
    443XL3XL3XL3XL4XL
    464XL4XL4XL4XL—

    Example: you usually wear a 36C → M. F cup or larger, or a 30 band? Email us before you order.

    Free Size Swap. Wrong size anyway? We send the right one free, you keep the first.
    Not sure? Measure yourself →
    Loved by 10k+ British women
    4.8/5 (3,327 reviews)

    The X-Back Posture Bra

    Shoulders back. Lifted. Nothing digging in.

    £29.99 Buy 2, get 1 free

    • Encourages Better Posture
    • Wire-Free Lift & Comfort
    • Easy-On Front Closure

    See how it goes on

    Firm fit: between two sizes, go up.
    Free Size Swap: wrong size? We send the right one, you keep the first.

    Choose your pack

    1 Bra

    £29.99
    The X-Back Posture Bra in Black, front view with front fastening
    Most popular

    2 Bras

    Save £9.99
    £49.99 £59.98

    £25 each

    One for the week, one for the weekend.

    The X-Back Posture Bra in Black, front view with front fastening
    The X-Back Posture Bra in Black, front view with front fastening
    Buy 2, get 1 free · Best value

    3 Bras

    Save £29.99
    £59.98 £89.97

    £19.99 each

    Only £9.99 more than 2. Mix any colours and sizes.

    The X-Back Posture Bra in Black, front view with front fastening
    The X-Back Posture Bra in Black, front view with front fastening
    The X-Back Posture Bra in Black, front view with front fastening

    Your 3rd bra is free · applied automatically · mix any colours and sizes

    Free tracked delivery to your door in 5–8 days. 5–8 days

    Estimated arrival. You'll get a tracking link as soon as it ships.

    Free Size SwapWrong size? Keep the first.

    Free UK deliveryTracked, 5–8 days.

    14-day returnsChanged your mind? Fine.

    Secure checkoutApple Pay, Shop Pay, card.

    Visa Mastercard Apple Pay Google Pay Shop Pay

    Details and materials

    Wire-free, thermo-moulded cups with a 5 cm underband. X-shaped back support panel. Front fastening with three rows of hooks. Wide padded adjustable straps. Laser-cut edges and bonded seams.
    55% polyamide (nylon), 45% elastane. Sizes S–4XL. Colours: Black, Beige, Leopard, Pink Leopard.

    Size and fit

    It is a firm, supportive fit. Choose your usual letter size; between two sizes or fuller bust, go up. Use the size finder below. If it still isn't right, the Free Size Swap has you covered: we send the right size and you keep the first.

    Care

    Cold machine wash in a laundry bag, or hand wash. Fasten the hooks first. Dry flat. No tumble dryer, no fabric softener, no ironing.

    Delivery and returns

    Free tracked UK delivery, usually within 5–8 days of ordering. You can cancel within 14 days of delivery. Faulty or damaged? Tell us within 30 days and we replace or refund it. Shipping · Refunds & returns.
    The X-Back Posture Bra in Leopard, side view Image

    Sound familiar?

    Eight hours at a laptop. Straps that dig. Shoulders that creep forward.

    By 6pm the straps have left marks, the back clasp was a battle this morning, and every video call shows your shoulders rolling in. A rigid posture brace isn't the answer: you'd never wear one under a shirt. A bra cut to draw the shoulders back is. Wire-free, front-fastening, smooth under a t-shirt.

    ★★★★★

    “What I liked was feeling supported in a soft fabric. Now I wear it for office days too.”

    Claire M. · Verified buyer

    Choose your pack

    The design, explained

    No wire. No reaching behind. The X does the work.

    Every part of the design has one job: support without anything rigid against your skin.

    X-back support panel

    Sits across your shoulder blades and is cut to draw the shoulders gently back while you wear it.

    Wire-free moulded cups

    Lined, thermo-moulded cups and a 5 cm underband lift and shape, with no wire.

    Front clasp, three rows

    Fasten at the front and pick the row that fits. On and off in seconds, no twisting round.

    Wide padded straps

    They spread the weight across the shoulder instead of a thin line, so nothing digs in.

    Smooth under clothes

    Laser-cut edges and bonded seams: a clean line under a t-shirt or a shirt.

    The X-Back Posture Bra in Black, back view showing the X-shaped support panel Image

    Shoulders back, all day

    The X-back panel does the work.

    Nothing digs in

    No wire. Wide, padded straps.

    On in seconds

    Front clasp. No reaching behind.

    Wrong size? Free swap

    We send the right one. Keep the first.

    Thirty seconds, every morning

    On, adjusted, done.

    Detail of the three-row front hook fastening Image

    Step 1

    Clip at the front

    Fasten the three-row clasp in front of you, then choose the row that feels snug but comfortable.

    The X-Back Posture Bra in Leopard, showing the wide adjustable straps Image

    Step 2

    Adjust the straps

    Wide and padded, they spread the weight so nothing digs into your shoulders.

    The X-Back Posture Bra in Black, back view showing the X-shaped support panel Image

    Step 3

    Let the X settle

    The back panel sits across your shoulder blades and gently draws them back. That's the open-shoulder look.

    What women say

    Real routines, real mornings.

    What customers of the X-Back say after a few weeks of wear.

    • My first wire-free bra

      I kept my underwired bras out of habit, even though I took them off the minute I got home. I tried this one on a Saturday at home. What I liked was feeling supported in a soft fabric. Now I wear it for office days too.

      Claire M.

      Verified buyer

    • The front clasp changed my mornings

      Hooking a bra behind my back and then wriggling it into place was my daily ritual. With the front fastening I can see what I'm doing. It took a few minutes to find the right setting the first time; now it's one simple move.

      Sophie L.

      Verified buyer

    • I started with the size guide

      I was between two sizes and didn't want to guess. I measured myself and used the guide. When it arrived I also adjusted the straps instead of leaving them as they came. Taking that time helped me find a comfortable fit.

      Nadia B.

      Verified buyer

    • For days that don't stop

      Between the commute, meetings and the evening shop, I rarely sit still. I mostly wanted something soft. I wore it under a loose shirt and liked being able to move my arms without feeling held in a rigid shell.

      Isabelle R.

      Verified buyer

    • A shape I like under my tops

      I always try a bra on with my clothes before keeping it. I tested this one under a t-shirt, then a shirt. I like the line of the cups and the discreet finish. With very thin tops I just pick the colour that suits.

      Élodie P.

      Verified buyer

    • The adjustments make the difference

      The first time I had the straps too tight. I loosened them and tried another row of hooks. It felt much better. I like being able to adapt the support with simple moves instead of accepting a setting that doesn't suit me.

      Martine D.

      Verified buyer

    • Two colours I actually wear

      I chose a black and a beige to alternate with my clothes. They are the two I look for most in my drawer. The duo kept me on useful basics, with the same cut and the same settings for both.

      Julie A.

      Verified buyer

    • From work to the sofa

      I wanted one I could wear at work and keep on for a quiet evening. I tried it for a few hours at home first to adjust the straps. I like how soft it is and finding the same comfort when I switch from one thing to the next.

      Valérie C.

      Verified buyer

    Honest comparison

    How it compares

    FeatureX-Back Posture BraUnderwired braPosture brace
    Shoulders-back look✓✕Yes, but visible and rigid
    Wearable all day under clothes✓✓✕
    Front fastening✓RarelyN/A
    Wide padded straps✓Usually thinRigid straps
    Free Size Swap, keep the first✓RarelyRarely

    Four colours, S to 4XL

    Pick a favourite. Or mix three in your pack.

    The X-Back Posture Bra in Black, front view with front fastening Image

    Black

    The X-Back Posture Bra in Beige, front view Image

    Beige

    The X-Back Posture Bra in Leopard, close-up of the moulded cups and front clasp Image

    Leopard

    The X-Back Posture Bra in Pink Leopard, worn, front view Image

    Pink Leopard

    Buy 2, get 1 free

    Free Size Swap

    Wrong size? We send the right one free. You keep the first.

    Sizing online is the one thing that stops people ordering, so we took the risk off you: one free swap per order, within 30 days, nothing to send back.

    How it works
    1. 1

      Email us within 30 days

      Just your order number.

    2. 2

      Send a photo of the size label

      Plus your usual size and two measurements.

    3. 3

      We send the right size, free

      Tracked delivery. Keep the first one.

    Same colour, or another from the range. Faulty or wrong item? That is replaced separately and does not use your swap.

    Find your size

    Your usual UK size, or two measurements.

    Find your UK band (row) and cup (column). Between two sizes or a fuller bust? Go up one size.

    BandBCDDDE
    32———SS
    34SSSMM
    36MMMLL
    38LLLXLXL
    40XLXLXL2XL2XL
    422XL2XL2XL3XL3XL
    443XL3XL3XL3XL4XL
    464XL4XL4XL4XL—

    Example: you usually wear a 36C → choose M. F cup or larger, or a 30 band? Email us before you order.

    Two measurements with a soft tape, wearing no bra or a non-padded one.

    Before you order

    Frequently asked questions

    Size, swap, delivery: the answers in one place. Still unsure? We reply within one working day.

    Contact us
    Will it correct my posture?
    It is a posture bra, not a medical device. The X-back is designed to draw your shoulders back for an open-shoulder look while you wear it. We make no medical claims.
    Which size should I order?
    Use the size finder on this page: your usual UK size, or two quick measurements. It is a firm, supportive fit, so if you are between sizes, go up.
    What if the size is wrong?
    One free size swap per order within 30 days. Send us a photo of the size label and your measurements, we ship the right size, and you keep the first one.
    Can I mix colours and sizes in a pack?
    Yes. Pick a colour and a size for each bra in your pack of 2 or 3.
    How long is delivery?
    5 to 8 days to the UK, free and tracked. We ship from our partner warehouse.
    What is it made of?
    55% polyamide (nylon), 45% elastane.
    Can I wear it while breastfeeding?
    It is not designed as a nursing bra.
    How do I wash it?
    Cold machine wash in a laundry bag, or hand wash. Dry flat. No tumble dryer.

    Shoulders back. Chest lifted. Nothing digging in.

    1 for £29.99 · 2 for £49.99 · Buy 2, get 1 free: 3 for £59.98
    Free tracked UK delivery · Free Size Swap

    Get 3 for £59.98

    Free tracked UK delivery

    On every order. Usually with you within 5–8 days.

    Secure checkout

    Card, Apple Pay, Google Pay and Shop Pay, all through Shopify.

    Free Size Swap

    Wrong size? We send the right one free. You keep the first.

    Real people, here to help

    Questions on sizing? Email us before you order.