Hydro Flask 20 Oz All Around Tumbler With Straw Lid . The Splash-resistant Flexible Press-in Straw Lid Keeps Your Favorite Drink At The Ready And Easy To Sip. These Insulated Tumblers Are Incredibly Comfy To Hold And Are Easy To Fill Sip And Go. Specifications for Hydro Flask 20 Oz All Around Tumbler With Straw Lid HDF-T20PS374: Manufacturer: Hydro Flask Fabric/Material: 18/8 Pro-Grade Stainless Steel Weight: 0.75 lb Size: 20 oz Application: Casual Travel Length: 3.4 in Package Contents: Hydro Flask 20 Oz All Around Tumbler With Straw Lid