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 separate side & underarm zip vents (accessible even when wearing a back-pack), Wrist zips ensure a snug-fit & facilitate closure over gloves, Waterproofed zipped twin rear pockets & welded chest pocket with ipod port, Reflective on chest back shoulders & sleeves,