High Performance Trail Shoe | Ultralight, hyper-breathable shoe designed for hot-weather trails, weekend thru-hikes, and long backpacking trips in summertime. Astralite SuperCritical Foam | Nitrogen-infused Supercritical TPE midsole is cleaner to produce, more responsive, lighter, and more durable than EVA. Balanced Geometry | Level Footbed’s zero drop works with a wider toebox to keep your feet in a natural barefoot position. G.15 Rubber Trail Grip Outsole | Astral’s most durable non-marking rubber coupled with a semi-rigid midsole top for a superior grip and reduced foot fatigue. Technical Details | [Intended Use] Hiking, Thru Hiking, Backpacking, Trail Running; [Drop] 0mm; [Stack Height] 20mm; [Weight] 10.7oz; [Shape] Original Shape (Secure Midfoot & Heel, Wide Toebox; [Upper] 100% Recycled (rPET) 3D Mesh, TPU; [Heel Cup] EVA; [Sockliner] eTPU; [Midsole] 12mm TPE; [Outsole] Trail Grip, G.15 Rubber