The Sawtooth X Low Waterproof is even more capable than our beloved original. It has a new outsole for superior traction and a new Adaptive Cushioning Technology midsole for an even smoother ride. But among all this new-ness it retains the same great fit and feel and our B-DRY waterproof technology, so you can be confident taking on the trail, puddle filled or otherwise. Product Features: O Fit Insole: Our proprietary insole is what we&';re known for. Molded to match the specific shape and construction of every pair we make, this purpose-designed technology delivers the kind of fit, feel and performance that&';s unmatched in the industry. ACT+ Midsole: A proprietary rubberized EVA that adapts to varying terrain. This unique blend of dualdensity, lightweight cushioning system provides the wearer a high level of energy efficiency and a softer heel strike landing zone. Recycled Materials: 100% recycled polyester laces and webbing, and quick drying 100% recycling polyester lining and 50% recycled waterproof lining help us lighten our impact on the planet. Trail Tread Rubber: Oboz&';s most-tested rubber compound boasting superior slip-resistance, enhanced durability, and improved elongation and tensile strength. Oboz B-Dry Waterproof: There&';s no denying feet sweat and trails can get muddy. There&';s also no denying the ability of our proprietary waterproofing system, B-DRY, lets sweat escape while keeping moisture out.