Introducing the Set of Bucuti Stainless Steel Water Canteens. Each canteen holds 350 ml and features double insulation for superior temperature retention. Crafted from durable stainless steel, they're perfect for outdoor activities, travel, or everyday use. Keep beverages cold for 24 hours or hot for 12 hours. Sleek and leak-proof, these canteens are designed for convenience and style. Stay hydrated in any situation with Bucuti's stainless steel canteen set.