Featuring the lightest, softest, and most responsive midsole ever in an Oboz shoe, the Katabatic Low is built for moving fast on the hiking trail. The EVA midsole provides a smooth ride and good transition while the outsole&';s multi-directional lug pattern provides exceptional grip and superior acceleration and braking. Width Standard Width - Women&';s standard width is B in the heel and C in the forefoot (according to Brannock DeviceA(R)). 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 Shoe - Medium volume feet tend to be standard width with some combinations of high and/or low arches and a high and/or low instep. Upper Material Abrasion-Resistant Breathable Mesh Reinforced TPU Overlays| welded & stitched to reduce weight, and provide protection & durability Weight 9.8 oz / 278 grams