Quick where it counts. Tough where it matters. Hikers in the Katabatic RT Low Waterproof can feel confident moving quickly over wet and rugged terrain. Premium materials like GORE-TEX Invisible Fit, Vibram Megagrip rubber, and durable ballistic mesh will help keep you comfortable and feeling good without adding weight. 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. Width Standard - 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. HeelDrop 8mm Weight 12.2 oz / 347 grams