FEATURES of the La Sportiva Women"s Electron A slip lasted upper built on an ergonomic last provides a svelte, form fitting, glove like fit that is super responsive Microfiber upper protects the foot and conforms to any foot shape for a comfortable fit PU and EVA midsole work in tandem to absorb the trail features and provide the plushest ride on the market Soft PU deforms upon impact to dissipate impact forces before they are further absorbed in the EVA layer SPECIFICATIONS of the La Sportiva Women"s Electron Weight: 10.48 oz / 297 g Last: Fit: Medium/Wide Lining: Air-Mesh Sole: Morpho Dynamic Frixion AT H (mm): Heel: 31mm / Toe: 20mm / H: 11mm Cushioning: Midsole: PU: 30A / EVA: 45A The SPECS for Upper Microfiber 4-way stretch Nylon dynamic scree guard The SPECS for Midsole Morpho Dynamic Polyether PU Injection molded EVA TPU heel counter This product can only be shipped within the United States. Please don"t hate us.