Externally seam-sealed waterproof breathable soft-shell fabric with stretch Entrant® fabric front collar underarms & side panels create a superbly well fitted garment Ultrasonically welded seams offer ultimate comfort by creating a smooth internal surface Flexible ventilation is provided via side & underarm zip vents (accessible even when wearing a back-pack) Waterproof wrist zips ensure a snug-fit & facilitate closure over gloves Waterproof zipped rear pocket & welded chest pocket with iPod® port Reflective on chest back shoulders & sleeves