ASICS Women's GEL-Trail Sensor 3 WR Running Shoe Synthetic and mesh Rubber sole Trail Specific Impact Guidance System allows foot and shoe to work together in unison with the trail, providing the ultimate ride Inner Lock Lacing System has asymmetrical internal straps that comfortably wrap and secure the foot to tackle uneven and challenging terrain Solyte midsole material is lighter than ASICS' standard EVA and SpEVA, combined with improved cushioning and durability, Trail Sensor allows rearfoot to decouple for optimal traction on uneven terrain Water resistant upper offers no loss of breathability Performance trail outsole has reversed lugs that provide uphill and downhill traction on all types of terrain while the forefoot rock plate provides protection against stone bruises