This BaseCamp® pint tumbler is made of stainless steel with double-wall, vacuum-insulated construction and holds up to 16-oz. of your favorite beverage. This includes a non-spill clear AS pressure lid with silicone gasket seal and sliding lock. It's not microwave safe and we recommend you hand wash only for proper care. This comes packaged in a retail box and is perfect for taking a delicious drink with you almost anywhere you want.