Bottle Mate handles are made from a special blend of recycled material used for strength to prevent full bottles from slipping out of the handle and to prevent breakage under normal use. Designed for use with five-gallon (18.92-liter) PC, PET or glass bottles, the handles have been made in the US since 1985 and are guaranteed for life against breakage. www.bottlematehandles.com, [email protected]