SPECIFICATION, Material: Food grade 304 stainless steel material+Food grade PP, Size: 350ML: 3.3x5.9In/8.6x15.2CM-11OZ, 600ML: 3.3x6.6In/8.6x17CM-20OZ, ,PREMIUM MATERIAL, Our tumbler made of food grade stainless steel,with a BPA-free, splash-resistant, plastic lid, our tumbler electro polished on the inside to ensure your cups remain rust-free, without worrying drinks has rust stains or metal taste., ,VACUUM INSULATED, Our vacuum insulated double wall coffee cup which is also sweatproof, can help keep your favorite beverage cold & hot for hours, Let you enjoy the original taste of the drink at any time., ,LEAK-PROOF, Crystal clear lid with seal gasket tightly covers 20oz stainless steel mug and fits on most car cup holders, mug lid keeps beverages from spilling, transparent design lets you see what's in the glass drinks., ,PORTABLE DESIGN, Stainless steel vacuum cup, easy-grip design, easy to carry and keep hydrated anytime, anywhere. stainless steel water cup has a wide mouth design, which is very easy to clean. , ,OCCASION, This water bottle is perfect for work, home, swimming, sports, travel, BBQ, camping, parties, etc. You can make them the perfect gift for birthdays, school openings, anniversaries and Christmas., ,FORMRS GUARANTEE, If you have any questions or issues regarding please do not hesitate to send the seller a message through Walmart we will respond within 24 hours.