This is a great bed for our outdoor cat that sleeps in our garage. You can leave it plugged in 24/7 and gets just warm enough for him not to freeze during Michigan winters. He loves it and rarely leaves it!
Purchased two of these beds in red and green. The green bed is more of a sage color then the dark green shown in the photo. The 20" size is very roomy and fluffy, as both of our cats sometimes pile in together. The heating pad is not round, and allows a cat to move off to the side if it doesn't want as much heat. The temp. only goes up to 110 degrees, so for a human it won't feel hot, but is just what a cat likes. The cats love to snuggle in them. I've purchased this brand in the past and have been very pleased.