Merrell Men's Agility Peak Flex Trail Runner 100% Textile and Synthetic Imported Rubber sole Fabric, mesh, and TPU upper; Reflective details for increased visibility in low light Merrell Omni-Fit lacing system: provides a precise glove-like fit Hyperlock molded TPU heel counter for security during quick decents and sharp turns ; M Select FRESH antimicrobial agents reduces shoe odor EVA removable footbed ; FLEXconnect EVA dual-directional flex-groove EVA midsole for agility and stability on uneven terrain M Select GRIP+ outsole with skeleton-inspired lugs: sticky and durable for superior grip and traction on wet or dry trails