Hydro Jug This Original Traveler Large-Capacity Mug Features A Handle Design And Perfectly Meets Your Hydration Needs. The Cup Body Has A Leak-Proof Design And The Transparent Material Provides Insulation, While The Base Is Made Of Stainless Steel And Rubber. It's Ideal For Use In The Office, During Sports, While Traveling, And For Outdoor Activities. Available In 32 Oz And 40 Oz Capacities.