The Trail Wallet–where to start. It has a reliable, waterproof, and ready-for-years-of-service zipper that opens and closes. It's shaped to match the length and width of nearly every ATM or credit card out there, with room for a few more of them than you'd likely ever need on trail. And, as long as you're not trying to roll up $100 in ones, it's got room for a little bit of carefully folded currency, too. What makes it a true piece of Hyperlite Mountain Gear kit, though, is the 100% water and mayhem-proof Fully Woven Dyneema Composite Fabrics, super high-quality stitching, and a total weight of seven measly grams. As far as minimalist wallets go, this one is the final boss.