Skross Double Wall Stainless Steel Tumbler is a premium quality travel tumbler perfect for office or travel use. Its shape fits most beverage holders. It is made with ultra corrosion-proof highest quality SS-316 stainless steel inside. This tumbler is 100% leak proof, BPA-free, vacuum insulated and keeps drinks hot for 6 hours and cold for 12 hours. Content: 480 ml. Designed by Skross – a leading Swiss design brand.