Continental Rubber outsole Dual density EVA midsole Sockliner: Molded sockliner to enhance comfort and fit Midsole: Lightweight EVA midsole for long term cushioning Quiver of one trail shoes. From forest hikes to alpine adventures, these adidas Terrex hiking shoes let you explore high and low, near or far. Their dual-density design merges the comfort of a cushioned trail running feel with the stability of a hiking shoe to take on hikes, scrambles and via ferratas. The all-conditions grip of Continental Rubber means you can trust the AX4 to get you anywhere you want to go without worrying about your feet. This product is made with Primegreen, a series of high-performance recycled materials. 50% of upper is recycled content. No virgin polyester.