I wore Earth Shoes in the 70s. I have narrow heels prone to blisters, so I could only wear the slingbacks. I don't think I took off those shoes for the whole year of 1974. They take some time to adjust to. I recently saw a presentation on Earth Shoes on TV and decided to try them. I have been waiting for an opportunity to try Zappos too. I placed my order at 9:00PM and was handed my shoes at 1:00 the next day by the UPS driver. This was after selecting the free shipping option.