4505 4505 square neck active all-in-one with inner bra in cornflower-Blue
4505 4505 square neck active all-in-one with inner bra in cornflower-Blue - 1
4505 4505 square neck active all-in-one with inner bra in cornflower-Blue - 2
4505 4505 square neck active all-in-one with inner bra in cornflower-Blue - 3
4505 4505 square neck active all-in-one with inner bra in cornflower-Blue - 4

4505 square neck active all-in-one with inner bra in cornflower-Blue

4505

$43.00

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Free U.S. standard shipping on eligible ASOS orders over $75. Sold and fulfilled by ASOS, with final pricing, availability, and delivery details confirmed at checkout. shipping and returns information

Product Insights & Style Tips

The 4505 square neck active all-in-one in cornflower blue reads as sport-chic with a clean, streamlined mood. The square neckline sits crisp across the collarbone, while the sleeveless silhouette keeps the line lean. A built-in inner bra keeps the look smooth under the plain design, and the bodycon fit hugs the figure for a confident, modern silhouette.

Slip into this all-in-one for easy, all-day wear that moves with you. The inner bra supplies discreet support, while the sleeveless cut frees the arms for workouts, errands, or coffee dates. The close-fitting shape layers smoothly under a light jacket or blazer, then shifts to the front row with sandals or sneakers for daytime to evening transitions.

4505 leans into the now-and-later ease of one-piece styling, with a bright cornflower shade that pairs as well with neutrals as with punchy accessories. This piece sits at the intersection of activewear and everyday wear—think a gym-to-brunch moment with minimal effort and maximum polish.

Materials / Fabrication

  • Jumpsuits & Rompers by 4505
  • Plain design
  • Square neckline
  • Inner bra
  • Sleeveless
  • Bodycon fit

Recommended Care

  • Professional dry cleaning recommended for best results.
  • If washing at home, hand wash cold with a mild detergent and avoid wringing.
  • Lay flat to dry or hang to dry away from direct heat.
  • Avoid bleach and high heat; steam or low heat iron if needed.

About 4505

4505 is ASOS's in-house activewear label, offering performance driven gym wear and easy, fashion forward athleisure for both women and men. The range spans leggings, sports bras, tees, hoodies, joggers, jackets and seasonal outerwear, all built on practical fits and versatile silhouettes that transition from the studio to streetwear with ease. Emphasizing accessible price points and dependable quality, 4505 pairs moisture-wicking fabrics and thoughtful construction with a modern, urban aesthetic that fits into everyday wardrobes. Shoppers gravitate to 4505 for reliable, trend aware essentials that keep pace with workouts and casual outfits alike, making it a go-to for those seeking polished, sport-influenced pieces.