Built for the Hours You Spend in the Water
On Kauai, the best sessions often run long. You paddle out early, catch a few sets, then sit on the board between waves while the sun climbs higher over the north shore. A good rash guard earns its place on days like that, and this one was designed with those hours in mind.
The Koloa Thruster long sleeve rash guard is meant to move with you, whether you are duck diving, swimming out to a break, or spending an afternoon paddling along the coast. It is a practical layer for surfers, paddleboarders, and anyone who loves being on the water in the islands.
What Goes Into It
- 5.9-ounce, 90/10 poly/spandex stretch jersey
- PosiCharge technology
- UPF rating of 50
- Trim, comfortable fit
- Raglan sleeves
- Underarm gussets
- Available in Black/White Logo, Dark Grey Smoke/White Logo, Red/White Logo, Royal/White Logo, and White/Black Logo
Each detail is chosen to keep the shirt comfortable and flexible through a full session in the water.
Fit and Sizing
This rash guard has a trim, comfortable fit, so it sits close to the body without feeling tight through the shoulders and arms. Sizes run from X-Small through 4X-Large. For help picking your size, check our size chart before you order. If you fall between sizes or want a little extra room, our big and tall surf apparel page has more guidance.
How to Wear It
Pull this rash guard on over your head and let it settle before you head out. Wear it on its own for sun protection during a paddle, or layer it under a wetsuit on cooler mornings. It also works well on land after a session, rinsed and hung to dry while you grab a bite at the beach.
Care
Rinse your rash guard with fresh water after each use to remove salt and sand. Follow the care label on the garment for washing and drying instructions, and avoid harsh detergents to help the fabric keep its stretch and color.
Frequently Asked Questions
What fabric is the Koloa Thruster rash guard made from?
It is made from a 5.9-ounce, 90/10 poly/spandex stretch jersey with PosiCharge technology.
What UPF rating does this rash guard have?
The rash guard carries a UPF rating of 50 to help protect your skin from UV rays while you are in and out of the water.
Does this rash guard have raglan sleeves?
Yes, it features raglan sleeves along with underarm gussets for easier movement.
What colors are available?
You can choose from Black/White Logo, Dark Grey Smoke/White Logo, Red/White Logo, Royal/White Logo, and White/Black Logo.
Keep Exploring
Browse more from our mens, men's swimwear, and rash guards collections, or see what is new in the spring collection. You might also like the Koloa Surf Logo Sweatpants, the Koloa Wave Tank Top, and the Koloa Original Logo Training Tee. Explore our best sellers, check the size chart, visit big and tall surf apparel, or learn more about Koloa Surf Co.
