The X is for x-static. Fit Notes Length runs true to size. Form hugging heel cup, sculpted mid-foot, and a wider forefoot & toe box. Technical Specifications Width Standard - Women’s standard width is B in the heel and C in the forefoot (according to Brannock Device). Patterns and materials in a given model may influence fit. We always recommend trying our footwear on to ensure the best possible fit. Volume Standard — Medium-High volume feet tend to be wider with higher arches and insteps. Upper Material Oiled nubuck Cordura Fabric mesh TPU heel counter B-DRY Waterproof Membrane 100% RPET Repreve Laces 100% RPET Repreve Webbing Micro-injected PU window Weight 16.3 oz. | 462 grams We know you are going to love our new Sawtooth X Mid Waterproof. We’ve taken our adored original Sawtooth and given it a new grippier outsole, a new Adaptive Cushioning Technology midsole for a smooth ride, and updated its styling for a boot that takes things up to the “x” degree. 1 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. 2 Sawtooth X ACT Impact 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. 3 Cordura Constructed using high tenacity fiber technologies, weight for weight, CORDURA AFT fabrics are exceptionally durable. 4 Repreve 100% RPET REPREVE laces and webbing and quick drying recycled natural material lining help us lighten our impact on the planet. 5 Trail Tread Oboz’s most-tested rubber compound boasting superior slip-resistance, enhanced durability, and improved elongation and tensile strength. 6 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. Women's Sawtooth X Mid Waterproof