They're pretty much the perfect pair—our 21 oz Standard Mouth Bottle and our insulated Sport Cap. Together, they're your go-anywhere hydration companion. It stashes easily in a small shoulder bag, your pack’s side pocket, or your car cup holder, and holds enough to keep you going for hours without weighing you down. Slap a few Arkansas and Running Hog stickers on one and make it YOURS! These are perfect for our hilly, University of Arkansas campus, tailgates, and house watch parties! Product Benefits Versatile, middle-of-the-road size, equipped with our insulated Sport Cap TempShield™ insulation eliminates condensation and keeps beverages cold up to 24 hours and hot up to 12 hours Durable 18/8 Pro-Grade Stainless Steel construction BPA-Free and Phthalate-Free Compatible with our Standard Mouth Flex Cap Sport Cap is not intended for use with hot liquids and is not leakproof Size & Dimensions: 21 oz Volume 621 mL Mouth Diameter 1.91" Diameter 2.81" Height 10.4" Weight 11.3 oz