Atomic’s Memory Fit shell technology features a shell that can expand by up to 6mm in the forefoot and up to 10mm in the ankle for a fully customizable fit. The Hawx Ultra XTD uses a Free/Lock 2.0 walk mode and frictionless pivot for a smooth 54° range of motion, and is compatible with both alpine and pin-style bindings thanks to Dynafit certified tech inserts. The rockered, rubberised sole unit improves grip while walking and the 3D Memory Fit liner is breathable and washable to keep your feet comfortable and fresh on even the longest hikes.