Made entirely of HS200 high stretch neoprene for exceptional comfort and fit7mm HS200 high stretch neoprene cranium and 4mm HS200 high stretch bib4mm HS200 high stretch skin-in neoprene face seal left unbound to allow for custom trimmingUnique vent design releases air trapped at the top of the headWaterproof glued & blind stitched seamsHanging loop located at top for easy dryingCOLORS: Black SIZES: XS, SM, MD, LG, XL, XXL