Contigo SnapSeal Stainless Steel 20 Oz. Snap seal lid technology is leak proof when closed for on the go activities Drinks stay hot up to 7 hours or cold up to 18 with THERMALOCK vacuum insulation Easy one handed drinking with a flip of the lid Fits most car cup holders for a no hassle commute Top rack dishwasher safe lid; hand wash only stainless steel body Brand New