The Vacuum Insulated Stainless Steel Bottle makes sure cold beverages stay that way for up to 24 hours. Hot beverages do not lose steam, maintaining heat for up to 12 hours. Designed to take a hit, this double-walled bottle is made of 18/8 stainless steel, yet remains easy to carry with removable paracord. BPA and phthalate free. Vacuum Insulated Stainless Steel Bottle is made from 18/8 stainless steel and keeps beverages hot for 12 hours and cold for 24 hours. Rapid LockTM Technology Paracord Flexible, soft cord is comfortable to carry and removes easily for cleaning. Take your bottle everywhere without the worry of spilling it! The quick locking cap system is leak-proof and worry free. Hot or Cold Vacuum insulated stainless steel keeps hot or cold beverages at their optimal temperature.