Here's what other sites are saying:
That sun may be hot, but the water is still pretty cool. Kill two birds with one stone with the Dakine Storm Neo-Insulator Men's Short-Sleeve Rashguard. The Silver Skin neoprene helps retain body heat so you stay warm and comfy, and it's 50+ UPF-rated to protect your skin from getting roasted.
Men's Dakine Neo-Insulator Rashguard is a thicker rashguard with a good neoprene layer for added warmth and longer water sessions. Rashguards help keep you warm and protected from the sun when in the water or exposed to the water for long periods of time. Made from 8 oz. Lycra with 1.5mm of neoprene. Seamless underarms prevent irritation and chaffing. Tall Neoprene collar keeps cold water out. Stretch panels. SPF 50+. Center back bottom hem zipper closure. Get the combined benefits of a rashguard and some insulating neoprene like you'd find in a wetsuit in this must-have combo for long days in the water. Materials: 8 oz lycra, 1.5 mm neoprene. Sun protection. UPF 50+
- Tahoe Mountain Sports
Dakine rash guards are tried and true, and the Dakine Neo Insulator Short Sleeve Rashguard for men is made to handle all the seven seas can throw at you.
- Altrec Outdoors