We Exist to Give Generously: Simple Modern is built on serving you, offering remarkable value, and giving more than 10% of profit. All products are covered by a limited lifetime warranty. Fits Most Cup Holders: The shape of all Classic tumblers will fit normal sized cup holders. Premium 18/8 Stainless Steel: Tumbler is made from high-quality, food-grade 18/8 stainless steel and is coated in a durable finish. 2 Lids Included: Straw Lid & Flip Lid - An internally threaded insulated straw lid and insulated flip lid are included with your purchase. Vacuum Insulated: Simple Modern Classic tumblers are double walled and vacuum insulated, which keeps your favorite beverage hot or cold for hours.