Tumbler Is 18/8 Stainless Steel Inside And Out; Finished In Silver On The Outside. Holds Up To 20 Ounces; Keeps Hot Drinks Hot And Cold Ones Cold For Hours. Clear Lid Includes Silicone Sealing Ring And A Sliding Mechanism To Easily Cover Or Uncover The Drink Opening. To Care For Tumbler, Hand Wash Only And Do Not Use In Microwave. Tumbler Features A Wrap-Around Design Of Our Kids Collection Stickers; However, The Sticker Designs Are Actually Printed On The Tumbler.