We know what you’re thinking: a featherlight boot designed for the mountains? The Lems Waterproof Boulder Summit Boot ($157) is basically the boot version of that friend who effortlessly runs marathons while eating pizza.

Weighing in at a ridiculous 14.8 oz. (thanks to an air-injected outsole, which sounds suspiciously like magic), this zero-drop beast is designed to keep you moving fast without sacrificing stability. It’s lined with a waterproof membrane, meaning your feet stay drier than a retiree’s toast, even in the wettest conditions. With a leather/nylon shell and a relaxed fit, it’s pliable yet supportive. If you want to conquer a mountain trail without feeling like you’re wearing concrete blocks, these are the boots for your next spontaneous vertical adventure.