Hydro Flask 24 oz Vacuum Insulated Stainless Steel Water Bottle, Standard Mouth w/Loop Cap, Tangelo Medium (Standard Mouth) opening, Double Wall Vacuum Insulated Keeps Hot up to 6 Hours, Keeps Cold up to 24 Hours BPA-Free, 18/8 Stainless Steel Signature Powder Coat Finish Largest standard mouth size option available and ideal for pairing with the Hydro Flask sport cap for one-handed refreshment