I've got a 2 rug one & I love it. A really wet rug will need to stay on it overnight to get properly dry.
I tried looking for where I got it from, but the web address doesn't work any more. I've prob had it a good 6 or 7 years. They are very useful when it's raining the whole time as you can have one rug on the horse getting wet & one on the dryer getting dry!!