Made using less water and energy, this hiker provides out of the box comfort for days spent on the trail, without sacrificing durability. Full grain leather with ECONYL fiber upper; ECONYL is 100% regenerated nylon fiber from fishnets and other nylon waste. Bellows tongue keeps debris out; Tongue and Collar Lining: 50% post consumer recycled polyester. Breathable mesh lining; Quarter Lining: 80% recycled polyester. Protective rubber toe cap; Toecap: 10% recycled rubber. M Select