4505 4505 Icon active quick dry muscle fit base layer training long sleeve mock neck top in white
4505 4505 Icon active quick dry muscle fit base layer training long sleeve mock neck top in white - 1
4505 4505 Icon active quick dry muscle fit base layer training long sleeve mock neck top in white - 2
4505 4505 Icon active quick dry muscle fit base layer training long sleeve mock neck top in white - 3
4505 4505 Icon active quick dry muscle fit base layer training long sleeve mock neck top in white - 4

4505 Icon active quick dry muscle fit base layer training long sleeve mock neck top in white

4505

$29.99

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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 Icon active base layer pushes a clean, go-everywhere energy. In white with a plain, streamlined design, the long sleeves and muscle fit skim the torso for a sharp, athletic silhouette. It feels ready for warmups, cooldowns, and everything in between, a stealthy layer that holds its edge.

Built to hug the body without feeling tight, this long sleeve sits close through the chest and arms, easing under a crewneck, zip hoodie, or performance outerwear. It tucks neatly into high-rise bottoms or lies smooth under oversized layers, staying put through reps or errands and keeping you polished from studio to street.

4505 keeps it practical and punchy with this icon base layer, a white staple that pairs with leggings, denim, or joggers. The look is quietly confident and versatile, ready to go from gym floor to coffee run with zero fuss.

Materials / Fabrication

  • Plain design
  • Crew neck
  • Long sleeves
  • Muscle fit

Recommended Care

  • Machine wash cold with like colors
  • Use a mild detergent; avoid bleach
  • Tumble dry low or lay flat to retain shape
  • Iron on low heat if needed

Fit Notes

  • Muscle fit through the torso for a close, streamlined silhouette.
  • Long sleeves and a crew neck define the base layer silhouette.
  • Quick dry base layer fabric supports moisture wicking during training.

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.