Burton ZIP LINE SO Step On Step On Zip Line Boots Color: Black Size: 23cm My second daughter used these for one season, and my eldest son used them for two seasons, each season about 3-6 times. They were used by my children in their 3rd and 4th grade years. They are being sold because they have outgrown them. Since they were used by children, there is a feeling of use, but I think they can still be used. Please refrain from purchasing if you are nervous about used items.