CASTELLI exclusive GORE-TEX INFINIUM™ WINDSTOPPER® 205 Warm brushed water resistant fabric on front-facing surfaces. GORE-TEX INFINIUM™ WINDSTOPPER® 203 stretch on rear-facing surfaces for extra stretch and breathability. Refletcive taped shoulder seams for extra rain protection. YKK® Vislon® zipper for easy sliding, covered for extra wind and rain protection Zippered ventilation opening on side of chest. 2 rear pockets with pump sleeve are easily accessed with gloved hands. Gabba-style dropped tail with large black reflective panel.