Brooks Women's Mach 13 Spike Cross Country Shoe 100% Synthetic Rubber sole You wait poised at the start line in a near crouched, cat-like position, ready to burst forward. Feel the hunger for the win take hold of you as you slip into the Mach 13 Spike from Brooks&reg;. An ultra lightweight cross-country racing flat. Highly breathable mesh upper for a comfortable in-shoe environment. Microfiber and synthetic leather overlays provide ultra-lightweight, durable support. Dynamic arch straps help lock the foot down over the midsole. Lightly padded tongue and contoured heel cup for added comfort and performance. Full-length compression molded EVA midsole offers lightweight cushioning. Ultra-thin contact rubber outsole supplies lightweight grip and durability. Five-spike configuration delivers the ultimate in traction. Measurements: Weight: 6 oz Product measurements were taken using size 8.5, width B - Medium. Please note that measurements may vary