The Outdoor Research Ferrosi Thru Gaiters earned its name for its incredibly light weight that's perfect for ounce-counting backpackers, and fits trail runners and low profile hiking boots in keeping with the ultralight ethos of thru-hikers. A shoelace hook and drawcord cinch at its top hem ensures a snug fit that keeps debris out of your footwear, and a replaceable instep strap makes gear fixes on the go a breeze.