Thermos vacuum insulation technology for max temperature retention Stainless steel construction Push button lid with drinking spout Durable snap-on lid cover Sweat-proof exterior The FUNtainer 16-ounce Vacuum Insulated Stainless Steel Water Bottle with Spout keeps drinks cold for up to 12 hours. The double wall stainless steel construction is built to handle drops, dings and assorted roughhousing. Includes an integrated carry handle with soft-touch grip, making it easy for kids to carry with them throughout the day. Keep germs away with the hygienically covered drinking spout. To clean, you can pop your FUNtainer water bottle in the dishwasher; however washing by hand is recommended.