I purchased the large size of the Arctic Shag Cozy Mat for our 51 lb rescue pup, and it fits her crate of the same size perfectly (36 x 23). The shag peeks out just a bit at the bottom of her crate but it actually looks so cute that way. We also purchased the matching blanket in a small size and it fills up the extra space in her crate that she doesn’t yet fill (still growing), and she snuggles with it and moves it around to get settled. As a side note, our pup is an aggressive chewer who has torn apart a LOT of crate pads and covers, but for some reason she has not tried to do that with this mat & blanket, despite their furry-ness. I am dying to order everything in this collection now because it’s so aesthetically pleasing AND supremely snuggly.