Arc'teryx always tops the competition with its harnesses and outerwear, so it isn't too shocking that the Women's Acrux FL GTX Approach Shoe is the newest contender for the best in ultralight performance for hikers and alpinists. The Acrux FL GTX has that same unique style and performance that we all expect out of Arc'teryx. For starters, Arc'teryx constructed the Adaptive Fit liner separately from the upper in order to hug your foot with breathable, quick drying mono mesh for a truly customized fit. Arc'teryx slipped Gore Tex's Performance Comfort Stretch membrane inside the Adaptive Fit liner for extremely reliable waterproof, breathable protection. Unlike standard membranes, Performance Comfort Stretch wraps entirely around the foot from top to bottom in order to maximize protection like never before. The Acrux FL GTX also features a lightweight and surprisingly durable seamless upper designed to handle rock, snow, and ice with ease. This upper features a non woven, DWR treated internal surface that sheds wet weather, PU coated nylon for air permeability and abrasion resistance, and TPU film for enhanced support and durability. The two top lace holes have integrated reinforcements to reduce stretching. Underfoot, Arc'teryx equipped the Acrux FL GTX with a premium injected EVA midsole designed for stability and enhanced braking. The 3D molded toe and heel caps buffer impacts, offer rock protection, and resist cracking. There's also an anatomical arch shank, and the custom developed 3D molded Ortholite footbed offers maximum comfort and breathability. Vibram's brand new MegaGrip rubber makes the Acrux's sole fine tuned for any trail. Design features include a climbing zone with traction grooves, grippy inserts for smearing, Arc'teryx's RockGrip with anti slip lugs, and a spherical heel shape for a smooth stride.