Pearl Izumi Women's EM Trail N3 Trail Running Shoe 100% Textile/Synthetic Imported Rubber sole Spring/Summer 2017. Dynamic Offset: 4mm at initial contact to 7.5mm at mid-stance Seamless Upper delivers improved mid-foot fit and the anatomical forefoot shape allows for natural forefoot splay and foot swelling With 1:1 Energy Foam rim & core midsole construction puts soft cushioning under your entire foot. Heel Stack Height: 30mm ESS forefoot rock plate protects feet against stone bruising and rock push-through. Aggressive, multi-directional carbon rubber outsole offers superb traction and abrasion resistance