size : 6.5cm*17cm 6.5cm*22cm Capacity: 300-350ml 400-500ml Material:304 Stainless steel+food grade pp+silicage Quantity: 1pc Feature 1.leak-proof 2.Warm function (about 6-12 hours), suitable for office ,home ,travel use.Pls understand the thermal effect also depends on temperature . 3.304 stainless steel inner 4.Usually new cups will have little smell ,we will send a tea ball into it to remove smells . Matters needing attention The new products must be washed a few times with boiling water (or adding edible detergent) and high temperature disinfection before use. Please use boiling water (or cold water) preheat (or pre cooling) 5-10 minutes , so as to better insulation effect. Please do not have full amount of water, so as not to tighten the lid when boiling water overflow burns. Drink slowly and carefully when hot drinks, so as not to burn. Should not be held long milk, milk products and fruit juice and other carbonated drinks. After drinking, please tighten the cup cover to ensure hygiene and cleanliness.