They claimed they were nearly indestructible with normal wear and tear (whatever that number is), but my pair didn't let me down and have been washed a few times after going down the drain. After a week they are comfortable compared to walking/climbing in Feiyues (horrible feeling for people with flat feet). Haha they are the best blue too, the rubber sole is durable and I've been wearing them every day for 2 years. Definitely recommend! I wear mens 10.5 US and bought 11, it was a great move considering my toes have a better grip on the ground, logs etc.