The Endura GV500 Reiver LS Jersey uses a Rapid wicking, lightweight merino blend knit for the main body fabric and a leightweight stretch woven fabric overlay on the chest and the sleeves for added durability and wind protection.Endura GV500 Reiver LS Jersey HighlightsRapid wicking, lightweight merino blend knit main body fabricLightweight, stretch woven fabric overlays on chest and sleeves add durability and wind protectionZipped chest and rear security pocket3 open rear pockets plus side mesh stash pocketFull length front zipArticulated sleeves for a cycle specific fit More info