Sandstein

Took this on a long road trip and tossed it in my bag without a second thought — the leakproof lid with the straw down really held up, not a single drop escaped. Fits right in the car’s cupholder, which made sipping on the highway a breeze. The flip straw feels surprisingly sturdy too, easy to open

The circular flip straw is such a thoughtful upgrade—no more fumbling with a separate straw or worrying about grime on the mouthpiece. It’s genuinely leakproof with the straw down, so I’ve tossed it in my bag sideways and not a drop escaped. The 40oz size fits my car’s cupholder perfectly, which mak

The flip straw is such a small detail but it makes a huge difference—no more fiddling with a separate lid piece while driving. It’s been knocked over in my cupholder twice now and not a single drop escaped. Honestly, this is the first tumbler I’ve owned that actually lives up to the leakproof promis