Have you ever just put your washing out and then it starts to rain? When you are going off to work the sky looks good but you never know? Washing line throws for rotary washing lines... Simply made of plastic with a hole in the middle and strategic eyelets to secure it. Takes a second to put on but saves all that unecessary taking in the washing for a short rain shower and give those who go to work peace of mind their washing will be dry on their return.