30 oz Insulated Tumbler Spill Proof Travel Mug with Leak Proof Lid [Mary Square] 30 oz To Go Tumbler Sea Glass 30 Oz Tumbler Seafoam YukonCR Ocean Lover's Dream: SEA Themed 30 Oz Tumbler, Ideal for Cold Beverages 20 oz Insulated Stainless Steel Tumbler Mug Ocean Shells on The Beach Sea Sunset Sailboat 40 oz Tumbler with Handle and Straw Stainless Steel. Stainless drinkware you will obsess over! Our new 30oz "Sea Glass" Stainless To Go Tumbler is designed for those on the move. With triple walled insulation, it keeps beverages cold for 24 hours or hot for 12, ensuring your drinks maintain their ideal temperature throughout the day. Details: Holds 30oz. Includes reusable straw Comfort grip handle Triple walled, vacuum insulated, copper lined 24 hours cold 12 hours hot Anti slip silicone base Sealed locking lid Sweat free finish Leak proof lid