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Under Armour

Under Armour Biomolecular Swim Set - White & Blue

Under Armour Biomolecular Swim Set - White & Blue

Regular price $44.00 USD
Regular price Sale price $44.00 USD
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Under Armour's Biomolecular Swim Set pairs a performance long-sleeve shirt with matching volley shorts—thoughtfully engineered for young swimmers who demand both protection and style. The lightweight shirt features UPF 50+ sun protection and smooth knit fabric that moves seamlessly from poolside to lap work, with a tagless interior for irritation-free wear. The coordinating shorts are crafted from a suede-like, quick-dry material that resists salt and chlorine, preserving color through countless seasons. An encased elastic waistband ensures secure, all-day comfort, while the built-in mesh brief adds breathability. Made from 100% polyester, this swim set strikes the refined balance parents seek—elevated performance without fuss or flash. Ideal for serious young swimmers, beach days, water park adventures, and everyday summer activity.

Sizing

SizeHeight (in)Weight (lb)Chest (in)
2T33-3529-3320-21
3T35-3832-3620.5-21.5
4/4T38-4135-3921.5-22.5
541-4438-4222.5-23.5
6 (Little Boys)44-46.522.5-24.5
7 (Little Boys)46.5-5024.5-26
YXS (7)47-50.525-26
YSM (8)50.5-5326-27
YMD (10-12)53-5927-29
YLG (14-16)59-6529-32.5
YXL (18-20)65-7032.5-35.5

Measurements in in/lb.

Under Armour youth apparel is cut in an athletic, fitted silhouette and offers separate plus (+) fit blocks for wider builds, indicating the standard grade runs lean through the chest and waist.

Between sizes, or want a second opinion? Book a Style Lounge fitting or write hello@parkerjoe.com.

Shipping & Returns

Orders ship within 1–2 business days. Delivery timing depends on the shipping method you choose at checkout, and a tracking link follows by email the moment your order is with the carrier — from there, delivery is in the carrier's hands, though we're always happy to help. Complimentary pickup from our Houston studio — usually ready within 24 hours. Returns are accepted within 14 days of delivery — unworn, with tags; see our refund policy for full details.

Care Instructions

Gentle cycle, cool water. Lay flat to dry. Iron inside-out on low. Dry-clean for tailored pieces.

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  • Newborn through Size 18

  • Ships in 1–2 business days

  • 14-day returns