The Ahnu Tilden IV sandal features our new light weight Traverse platform so you can go all day on any surface and be secure and protected. From the quick drying mesh upper to the security of our integrated webbing and the dual density midsole your feet will be comfortable and ready to keep moving in the Ahnu Tildern IV. Lightweight dual density EVA midsole and footbed for comfort and shock absorption Integrated webbing for snug fit. TPU heel strap for secure heel positioning. Numentum Technology with lateral to medial heel clip for Neutral foot positioning.