Zoic Men's Woodsman Flannel Jersey 91% cotton 9% organic cotton Imported Breathable panels along side and under arm and mesh vents on upper back allow keep you from over-heating Brushed flannel fabric has a soft hand inside and out Internal sleeve cuffs prevent ''cold creep'' up your arms as you ride 9-Inch locking zipper slides easily when it's upright but stays put when it's down 9'' wide rear pocket with E-Z-grip silicone pull and stay-put tabs