Minimalist Outdoor Fitness Shoe | Astral’s do-it-all trail shoe built to support natural movement for any and all outdoor activities. Optiminimal Stack Height | Astral’s optimal blend of minimalist ground feel, combined with the cushioning and protection you want for long days on the trail. Biodynamic Shape | With an even wider toebox than Astral’s Original Shape, this Biodynamic Shape allows more room for your toes to splay. Balanced Geometry | Outdoor industry’s first drop-in midsole pairs with a flexible outsole, a wider toe box, and Level Footbed’s zero drop for a barefoot-like feel. Technical Details | [Intended Use] Hiking, Exploring, Outdoor Fitness; [Drop] 0mm; [Stack Height] 14mm; [Arch] Minimal; [Weight] 10oz; [Shape] Biodynamic Shape (Secure Midfoot & Heel, Wider Toebox); [Upper] 100% Recycled (rPET) 3D Mesh; [Midsole] 7mm Rechargeable EVA Drop-In; [Outsole] Trail Grip 2, G.15 Rubber