Island Flasks are a stylish way to keep hydrated under the hot Hawaiian sun. Island Flasks are made of stainless steel and are double walled and vacuum insulated to keep your beverages hot or cold for hours. Each flask has a black leak proof flip-top lid with handle. Island Flasks measure approximately 8.25"H x 2.75"in diameter and holds up to 550 milliliters. Flask is handwash only, lid is top rack dishwasher safe.