Workout Jumpsuit Sleeveless, Open Back with Built-In Bra

mumshape™ Open-Back Active Romper – Backless Workout Romper with Built-In Bra & Biker Shorts

Open-Back Statement Design | Adjustable Straps | Scrunch-Back Ruched Detail | Built-In Bust Support | Biker Short Cut

An activewear one-piece that flatters your shape and still feels featherlight is not a unicorn anymore. The mumshape™ Open-Back Active Romper pairs a bold back cutout with butter-soft stretch comfort. Pilates, a long walk, or a last-minute brunch: pull it on and feel freedom of movement and confidence show up in the same piece.

Product Features:

Open-Back Statement Design: The deep back cutout keeps air moving and turns heads in every movement, from the mat to the street.

Adjustable Shoulder Straps: Fine straps adjust in length and support through discreet sliders, tuned exactly to your body with zero compromises.

Built-In Bust Support: Removable built-in cups give gentle support and subtle shaping, with no restrictive layers underneath.

Scrunch-Back Ruched Detail: Strategically placed ruching across the seat follows your natural curve and gives your silhouette a defined, lifted look.

Soft Four-Way Stretch: The fabric stretches in all four directions and wicks moisture at the same time, for unrestricted movement and all-day comfort.

Effortless Square Neckline: The clean, flat-seamed square neck frames your neckline in a modern, athletic way. A look that reads casual and sporty at once.

Your Romper for Movement and Style: Step in and go. The mumshape™ Open-Back Active Romper takes you from workout straight into the rest of your day. No outfit change, no compromise. Just comfort, confidence, and a look that lands.

Ideal for: Active women who want one versatile, wearable piece for training, travel, or easy days out. Perfect if you want a standout sport look that carries effortlessly into everyday life, studio to coffee shop.

Available in: Black, Gray, Light Blue, Chocolate =

Loved by thousands of customers = because this romper makes the jump from workout to street style effortless. They love the breathable stretch fabric that supports without squeezing, and a back cutout that speaks for itself.

Material: 73% Nylon, 27% Spandex

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To keep your Jumpsuits like new:

1. Wash gently—treat with care:
Best hand-washed. If using a machine, use delicate cycle only. This keeps the shape perfect.

2. Use mild detergent:
No fabric softener or bleach—delicate fibers need gentle care to maintain their effectiveness.

3. Air dry, don't use the dryer:
Lay your Jumpsuitsflat or hang it—away from direct sunlight. This keeps the material elastic and color-fast.

4. Store properly:
Simply fold and store in a closet or hang on a hanger. No damp basements, no direct sunlight—your Jumpsuits likes it airy and dry.

5. Check regularly & replace:
Over time, even the best material can lose elasticity. If you notice it's losing support or looking tired, it's time for a new piece of self-care.

Free shipping with DHL on all orders & 30-day money-back guarantee. Click here to learn more about our return policy.

Shipping time:

3-7 Business Days

We stand 100% behind our products. That's why we offer a 100% money-back guarantee:

Up to 30 days after receiving your product, you can return or exchange it.