We have this on the customer request list! This is one they ask for over and over again! Many tell us they use a thick sturdy cotton yarn, and use it to wash their cars! Great idea! We think this is a great item to have around the house. You put the mitt on, do your dusting, then put the mitt in the washing machine, and you are dust free! Make some for your friends too, they will really appreciate it! Uses a thick worsted weight yarn, knitting needles US #10.5. Finished size is about 8 long that will fit most adults. You can make a little bit longer, if desired.