Hydracentials Insulated Custom Water Bottle Cover for Hydracentials Sporty Insulated Stainless Steel Water Bottle, 25 oz Custom fit for the hydracentials sporty 25 oz sporty insulated stainless steel water bottle Keep your hydracentials sporty 25 water bottle nice and protected Add an extra layer of insulation Made from neoprene, polyester and cotton Looks and feels like your favorite sweatshirt