Introducing the Hydration Master 40 oz Tumbler, your perfect companion for hydration on the go. This high-performing tumbler features double-wall vacuum insulation that keeps your beverages icy cold for up to 11 hours and filled with ice for up to 2 days. Made from BPA-free, 90% recycled 18/8 stainless steel, you’re not only staying hydrated but also supporting sustainable materials.
The innovative FlowState™ screw-on lid rotates to three different positions: a full-cover top, an easy sip opening, and a straw slot to prevent splashes while securing the included reusable straw. With an ergonomic handle equipped with comfort-grip inserts, carrying your drink has never been easier. Designed to fit most car cup holders with a base diameter of 2.95 inches, this tumbler is as practical as it is stylish.
Whether you’re at the gym, on a road trip, or just lounging at home, our 40 oz hydration tumbler is the best insulated tumbler for cold drinks you can trust.
Daniel Weber (verified owner) –
I’ve tried many tumblers, but the Hydration Master is by far the best insulated tumbler for cold drinks! It keeps my water icy for hours. Highly recommend!
Dorothy Marshall (verified owner) –
This tumbler fits perfectly in my car cup holder, and I love that it’s made from recycled materials. Great for hydration on the go!
Michael White (verified owner) –
After reading reviews for the Stanley Quencher tumbler, I decided to try this one instead. I’m so glad I did! It’s stylish and functional.