Mustard Seed White Stainless Steel Travel Tumbler With Matthew 17:20: Faith As Small As A Mustard Seed Can Move Mountains. Tumbler Is 18/8 Stainless Steel Inside And Out; 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.