These are 100% authentic. Preowned and still has a good amount of life. Had to switch to something else due to toe issues. Super comfortable and I have bought 4 pairs in all and my first pair from 5 years ago syill has life! Great for people with planta fasciitis. No box. Easy to wash. This is must have as a recovery footwear after a hike or cardio.. my plantar fasciitis has not flared since I started wearing them.