1.This cup leak-proof design， it is recommended into the bag. 2.Another section cup with a warm function (about 6-12hours)， suitable for office ，home ，travel use. 3.Thermal effect : 100��c，after 12hours ，can be kept over 35��c in summer， and over 35��c after 6 hours in winter 4.Usually new cups will have little smell ，hope to get your understand . 5.304 stainless steel inner，avoid of unhealthful chemical substances when using under high temperature. 6.Fresh， brief ，healthy are our cups special feature different with other cups. Product information: Material:304 Stainless steel+food grade pp+silicagel Gross Weight(about) : 250g Capacity: 180ml/360mlPackage Included: 1 x Thermos Cup