TECHNOLOGY: AeroLight(TM) featherweight technology uses spun steel, that is 33% lighter than standard stainless-steel drinkware Keeps drinks hot for 8 hours, cold for 12 hours, and iced for 40 hours FEATURES: Made from durable 18/8 stainless steel Leakproof design has a locking, drink-through lid Double-wall vacuum insulation Compatible with most car cupholders Dishwasher safe SPECS: Capacity: 20 oz. Weight: 0.60 lb. Dimensions: 2.7 in. L x 2.8 in. W x 9.5 in. H TECHNOLOGY: AeroLight(TM) featherweight technology uses spun steel, that is 33% lighter than standard stainless-steel drinkware Keeps drinks hot for 8 hours, cold for 12 hours, and iced for 40 hours FEATURES: Made from durable 18/8 stainless steel Leakproof design has a locking, drink-through lid Double-wall vacuum insulation Compatible with most car cupholders Dishwasher safe SPECS: Capacity: 20 oz. Weight: 0.60 lb. Dimensions: 2.7 in. L x 2.8 in. W x 9.5 in. H