. The Women's Response Trail 21 Train Running Shoe has a highly breathable mesh upper, making it great for hot days and mid-summer runs.Wide range.This neutral, everyday trainer from Adidas is built to handle all your trail running endeavors. A 10mm drop accommodates runners prone to heel striking, and seamless eyelets make the standard lacing that much more comfortable on those high-mileage days. When things get spicy, the Traxion rubber sole bites to give you that secure feel you need and will dig in on the descent, so you can boost your time on the downhill.Free gift with purchase