Pearl iZUMi Women's W EM Trail M 2 Running Shoe 100% Synthetic Imported Rubber sole Seamless Upper creates a supple and supportive fit for technical trail running Biomechanically-tuned dynamic offset-shaped E:Motion midsole for a mid-foot pronation running gait Bi-lateral mid-foot posts are trail tuned to keep your foot on top of the midsole platform in technical terrain 1:1 Energy Foam cushions forefoot upon impact and returns energy back to the runner Forefoot rock plate protects foot against stone bruising and rock push-through