Oh my gosh, should of had these a long time ago! Maybe they were already thought of but I never saw them. These washing bags have a "nobby" cloth fabric on the inside, thus putting in tennis shoes against this fabric, washed them off all the better!!! These bags are huge, you could put two shoes inside one, but then it would be too much of a distribution weight problem in your washer. So glad I got these for washing my tennis shoes now! I would recommend to any mom with little kids shoes also. Each bag would probably hold 5 kids shoes each. This comes in a set of 2. Price is great, quality is superb!!!! HEAVY DUTY!!!