Pearl Izumi Women's EM Trail M2 v2 Running Shoe 100% Synthetic Imported Rubber sole Running shoe in seamless upper featuring contrast stripes, logo patch on tongue, and lace-up vamp Dynamic offset-shaped E:MOTION midsole is biomechanically tuned for mid-foot pronation running gait Bi-lateral mid-foot posts to keep feet on top of midsole platforms in technical terrain 1:1 Energy Foam in forefoot for cushioning and efficiency Protective rock plate Dynamic offset 4 millimeter at initial contact to 7.5 millimeter at mid-stance