All of Matt & Nat's products are sustainable as well as eco-friendly. The brand has utilized several different recycled materials such as recycled nylons, cardboard, rubber, and cork. Matt & Nat consistently produce their linings out of 100% recycled water bottles, and they just started adding recycled bike tires into their collections. Matt & Nat do not believe in using leather in their products, and instead take advantage of vegan leather composed of natural materials. Matt & Nat's products are beautifully produced and are continually inspired by nature to preserve the incredible world around us.