Large Size 34 x 21 inch:Our XL size heated dog pad is big enough for 70 pound American Staffordshire or 50 pound pup and his brothers,they sometimes share the mat,if you just had a small pad,the dogs were always jockeying for a spot,now they are all snuggled and they can stretch out.one your pet curls up in it and you may can’t get her to leave it. Chew resistant cord which has 2 settings, low and high