Quick-dry webbing made from recycled plastic using traceable, verifiable REPREVE polyester yarn by Unifi supports your foot and stands up to abuse, Universal Strapping Stytem Lined with Ariaprene for increased comfort against the foot Easy hook-and-loop closure comes on and off quickly and gets the fit just right Molded EVA midsole with heel cupping and arch cookie for added support VIBRAM Mega Grip outsole has the optimal balance of durability and sticky traction for wet and dry surfaces Treated with Life Natural, a peppermint-based anti odor treatment Sustainability Initiative(s): Vegan, Webbing made from recycled plastic using traceable, verifiable REPREVE polyester yarn by Unifi Best for: day hikes, all-day wear, light hikes Half pair weight for size W7,M9,I2/3,T4,K13,Y4: 10.5oz RN 88276 .