Quite soft sole. Made more for the beach and walking, without many climbs on rough terrain. Also, the fact that the Velcro strap does not pass through a loop means that in very rough movements (or on quite difficult terrains), the Velcro may come off. You can always put it back in place, but it certainly does not provide the grip and security of more expensive models. For its price (15 euros) I consider it VFM.