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Boys long sleeve rashguard swimsuit in blue – shop online in Hong Kong, Singapore & Australia
Grech & Co boys blue long sleeve rashguard swimsuit with UPF 50+ sun protection
Best boys rashguard in blue – GRS-certified recycled fabric, UPF 50+ by Grech & Co
Kids rashguard for sun protection – Grech & Co blue long sleeve swimsuit, sizes 6m–9y
Boys long sleeve rashguard swimsuit in blue – shop online in Hong Kong, Singapore & Australia
Grech & Co boys blue long sleeve rashguard swimsuit with UPF 50+ sun protection
Best boys rashguard in blue – GRS-certified recycled fabric, UPF 50+ by Grech & Co
Kids rashguard for sun protection – Grech & Co blue long sleeve swimsuit, sizes 6m–9y
Boys long sleeve rashguard swimsuit in blue – shop online in Hong Kong, Singapore & Australia
Grech & Co boys blue long sleeve rashguard swimsuit with UPF 50+ sun protection
Best boys rashguard in blue – GRS-certified recycled fabric, UPF 50+ by Grech & Co
Kids rashguard for sun protection – Grech & Co blue long sleeve swimsuit, sizes 6m–9y

Boys Long Sleeve Rashguard – Blue

$340.00

Natural and eco-friendly, skin-kind materials

Handpicked for comfort, breathability & sensitive skin

Ethically made and personally vetted by MiliMilu

Boys Long Sleeve Rashguard Swimsuit – Blue | Grech & Co

Sun-safe, sustainably made, and designed for little adventurers — the Grech & Co Long Sleeve Rashguard Swimsuit in Blue is your go-to for beach days, pool sessions, and seaside holidays across Hong Kong, Singapore, and Australia.

Crafted from GRS-certified recycled fabric (80% recycled polyamide, 20% spandex), this boys' rashguard delivers UPF 50+ sun protection — essential for long days under the intense APAC sun. Long sleeves provide full-arm coverage so you can focus on the fun, not the sunscreen.

Why You'll Love It

  • ☀️ UPF 50+ protection — blocks 98% of UV rays, ideal for HK, SG & AU summers
  • ♻️ GRS-certified recycled fabric — eco-conscious choice for sustainable families
  • 🌊 Long sleeves for extra coverage during beach and pool play
  • 🤸 Stretchy spandex blend — moves freely with active little ones
  • Minimalist, timeless design — pairs beautifully with our Boys Shorts & Swimwear collection

Perfect For

Beach holidays in Bali, pool days at the club, or weekends at Repulse Bay — this rashguard is built for the APAC lifestyle. Lightweight and quick-drying, it's a travel essential whether you're heading to Sentosa, the Gold Coast, or your local lido. Browse our full kids swimwear collection for more sun-safe styles.

Complete the Look

Explore the full Grech & Co collection for coordinating styles, or shop our boys swimwear and girls swimwear for the whole family.

Care Instructions

Machine wash cold, gentle cycle. Wash inside out to preserve details. Hang or lay flat to dry — do not tumble dry.

Ships to Hong Kong, Singapore, and Australia.

We love this Boys Long Sleeve Rashguard for its perfect balance of sun protection, comfort, and effortless style. Made from GRS-certified recycled fabric with UPF 50+ protection, it's ideal for those long sunny days at the beach or pool when reapplying sunscreen isn't always top of mind (we've all been there).

Lightweight and stretchy, it lets little ones move freely — whether they're diving into waves at Repulse Bay, splashing at Sentosa, or exploring the Gold Coast shoreline. The long sleeves provide full-arm coverage without sacrificing comfort, making it a true beach day essential for families across Hong Kong, Singapore, and Australia.

This long sleeve swimsuit is made from 80% recycled polyamide and 20% spandex, GRS-certified and designed with UPF 50+ protection to keep your little one safe under the sun.
Machine wash cold on a gentle or delicate cycle with similar colors to help maintain the fabric’s softness, shape, and vibrant quality over time. For best results, a hand wash or delicate cycle is recommended.
After washing, hang dry or lay flat to dry naturally. Do not tumble dry, as heat may affect the elasticity and durability of the fabric. This gentle care routine helps preserve both the quality and the sustainable materials, keeping it beautiful wear after wear.

Our rashguard is designed to match your child's age for a comfortable, easy fit. We recommend choosing the size that corresponds to your child's current age. If your little one is on the larger or taller side, sizing up will give a better fit and more room to move.

Available in sizes 6–12m through 8–9y. The long sleeves are designed to stay in place during active water play, providing consistent UPF 50+ coverage throughout the day.

For best care and to maintain the fabric's shape and colour over time, we recommend washing the rashguard inside out on a cold, gentle cycle. Hang or lay flat to dry — do not tumble dry.

Wear it with

Shop women oversized linen shirt in Garnet red colour, this breathable linen shirt with linen shirts make the best women linen set in red colour.

Fashion That Gives Back

We proudly donate a portion of our online sales from our MiliMilu house label to Redress, which supports their mission to reduce textile waste and drive circular fashion. With our capsule collection 'There is No Planet B', we also donate 10% to charities and always support local communities.

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