Royal Robbins Cannon 1/2 Zip is all about warding off the chill, and works as well as an insulating layer as it does a solo piece in gentler climes. Color blocking on the sides and performance fleece bring form and function into an integrated whole. 100% polyester. Men's fleece pullover with 1/2 zip, zip-secured chest pocket, straight hem, raglan sleeve, tonal stitching details, classic fit. Material: Polyester.