This pair was very easy to put on with the single strap and was quite useful. I wore them almost every day for two months. I soaked them in oxygen bleach at home, washed them with detergent, and then washed them in the washing machine and dried them. I tried to clean them as much as possible, but there is some pilling. Please take a look at the condition and understand before purchasing. If you need the box, the shipping cost will change, so please let me know.