Gul EVORACE Long Sleeve Rash Vest MensGuls' development of the RaceLite material revolutionised the standard thermotop. The GCXPU:2L fabric has a Polyurethane coating on the outside for water resistance durability and flexibility combined with a fleece inner layer to keep you snug and warm a combination that performs either wet or dry as well as providing great sun protection.> FLATLOCK: SEAM CONSTRUCTION> GCXPU:2L MATERIAL: PU COATED 4WAY STRETCH THERMAL> WATERPROOF> BREATHABLE> WINDPROOF> H20PROOF TAPED SEAMS: STRETCH EXTERNAL TAPED SEAMS FOR WATERPROOFNESS AND DURABILTY> UV SHIELD: UPF 50+ SUN PROTECTION THUMB LOOPS