The Jax & Bones Napper Bed is incredibly comfortable and provides hours of deep sleep. Outer bolsters unzip for easy maintenance and the center pad is removeable for easy washing. This bed is overstuffed and excellent for senior dogs who need a little extra joint support. This bed is constructed using a premium cotton blend fabric that is durable and luxurious to the touch. Great for medium to high traffic use, this fabric choice is perfect for those looking for a more unique bed. Small: 24"X21"X7" Medium: 35"X27"X9" Large: 40"X32"X12" Extra Large: 50"X42"X15" Recommended sizes for dogs Small: 20 lbs. Medium: 40 lbs. Large: 75 lbs. Extra Large: 100 lbs.