RehaDesign Wheelchair Socks were designed to cover the small front caster wheels of manual wheelchairs thereby preventing the casters from transferring dirt and tyre marks to floors and carpets. They go on the caster tyres in seconds while sitting in the the wheelchair or while outside of the wheelchair (instruction demo video is available at You Tube). When they get dirty, throw them in the washing machine. RehaDesign Wheelchair Socks make a perfect Christmas or Birthday gift for wheelchair users, because they are new. Most wheelchair users do not know that they exist. So give the gift of a clean house to a friend or loved one. Or give it to yourself!