Stainless Steel, Insulated, Refillable, Reusable —Our All-Day 32 Oz Wide-Mouth Water Bottle Is The Flask To Grab To Keep Cold Drinks Cold And Hot Ones Hot. The Large Opening Makes It Easy To Add Ice —And Get Yourself A Bigger Gulp. Fill Up For Adventure. Tempshield®️ Double-Wall Vacuum Insulation Keeps Drinks Cold Up To 24 Hours, Hot Up To 12 Flex Cap Is Leakproof When Closed Honeycomb™️ Insulated Cap For Maximum Temperature Retention Made With 18/8 Pro-Grade Stainless Steel For Durability, Pure Taste And No Flavor Transfer Color Last™ Powder Coat Is Durable, Sweat-Free And Colorful Wide Mouth Opening Is Ice-Cube Friendly Bottle Fits Most Backcountry Water Filters Bpa-Free