Engineered for your commute, this low-profile, 20 oz. bottle is one-third lighter than Stanley's standard stainless steel bottles. The secret is Stanley's AeroLight™ featherweight technology that doesn't compromise on durability or thermal performance. Your water will stay cold from the time you leave home until well after quitting time. The drink-through lid locks tight for leakproof carrying in your bag or pack. Hand wash only.