The Xero Mesa Trail shoe is an ultralight, minimalist shoe perfect for trail running, backpacking, and fastpacking in the Sierras and beyond. This barefoot-style shoe is ideal for fastpacking and other fast and light mountain pursuits. The Mesa Trail pairs a lightweight, flexible sole with a wide toe-box so your feet have the freedom to move and flex naturally as you run or hike. The breathable uppers are super durable, and the outsole comes with Xero's 5000-mile warranty. Gnarly 3.5mm deep treads provide excellent grip while retaining a barefoot feel underfoot. A men's size 9 weighs just 7.7 oz (218 g) per shoe.