This double walled water bottle is made of food grade 304 stainless steel, which is durable, rust proof, and harmless to human health. The double-layer vacuum insulated rotary drum can keep the liquid hot and cold for several hours. This faucet is suitable for offices, schools, cars, camping, hiking, cycling, or other outdoor activities. Your logo imprint is also available! The price is based on 20 ounces.The quantity of over 1000 pieces is based on sea freight