This is a SURF8 quick-dry inner short john. It's made with a material that absorbs, disperses, and quickly dries to reduce chills from sweat, and it's designed to be worn under a wetsuit to increase warmth. Brand: SURF8 Function: Quick-dry (absorbs, disperses, and quickly dries) function reduces chills from sweat. Type: Short john type that provides good warmth for the stomach and prioritizes ease of arm movement. Usage: Used as an inner layer for wetsuits and drysuits, effective for cold protection. I bought this when I started surfing, but I'm selling it because I no longer have the opportunity to surf. It is new and unused.