KOODEE Vacuum Insulated Water Bottle Features: Double-Wall Vacuum insulated thermal technology for the insulated water bottle, keeps drink cold to 24 hours and hot to 12 hours.2 Wide mouth of 1.2 inches, most ice cubes fit in the opening of the stainless steel water bottle. Unbreakable and reusable sports bottles reduce plastic wastes. Safe hydro canteens for adults and children. Functions: Fit most cup holders and easy to travel. Keep your waters and drinks fresh. Great travel bottle choice for your gym, sports, bicycle, boats and outdoors.