In the interest of durability and support, with this Siren we stopped just short of nothing but net. But a breathable mesh upper and mesh lining go with the flow. Thin, sculpted leather strapping provides lightweight but effective soft buttressing. Merrells proprietary combination of women-specific Q-Form alignment in an Air Cushion Midsole smoothes out footstrike and improves stride efficiency. End Uses: Light hiking or biking on trails or urban terrain in dry, warm conditions. Best worn with mid to light weight socks. Features: Slip Lasted Construction. Full Grain/Synthetic Leather and Breathable Mesh Upper. Breathable Mesh Lining. TPU Injection Molded Heel. 4.5mm Anatomical Footbed. Nylon 6.6 Injection Molded Arch Shank. Q-Form Triple Density Compression Molded EVA Footframe. Air Cushion® Midsole. Vibram Siren Sole/TC5+ Rubber.

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