- 100% LEAKPROOF, GUARANTEED: The Era series is the only 100% leakproof straw tumbler that works for both cold and carbonated beverages, thanks to our patent-pending Ü-Turn technology. So, you can toss your drink in your bag and take it on the go without ever spilling a drop.
- COLDKEY METAL STRAW: The Era series also has our ColdKey stainless steel straw so you can reduce the amount of plastic sitting in your water all day and experience a cool, crisp drinking experience with a soft-touch silicone tip on the outside to top it off.
