The 12oz Owala SmoothSip Slider is a coffee cup that solves the one problem most travel mugs get wrong: the lid. Instead of a push-button or twist-top that inevitably dribbles, this one uses a sliding mechanism that seals completely. You can toss it in a bag or knock it over on your desk. No leaks.

The double-wall insulation keeps coffee hot for a solid hour or two, which is enough time to finish a 12oz cup without it going lukewarm. The spout is smooth and feels natural against your lips, with no sharp edges or awkward angles. The cup itself is narrow and easy to grip, even without a handle. At this size, it fits most car cup holders and standard bike bottle cages.

The only real trade-off is capacity. 12oz is on the small side for anyone who wants a full travel mug of coffee. You’re getting a short cup, not a commuter-sized one. But if you prefer a smaller, more controlled pour that stays hot and doesn’t spill, this is a well-executed design from a brand that knows how to make lids work.