Size Details (M) - This stylish dog bed mat measures approximately 76cm x 51cm x 2.8cm (30 x20 x1.1), ideal for medium dogs weighing up to 45lbs (20kg) . Reversible Pillow- The center pillow of the Dog Bed is reversible designed: one side surface is made of self-warming soft plush, which is very suitable for use in cold seasons, while the other side surface is with quality breathable canvas, which is ideal for use in warm seasons. NON Crimp-The dog mat is made of quality high-density foam, which will properly support your pets and always keep the cushion in good condition anywhere - in your room, in vehicles, in crates, etc. Easy to clean - The dog mat is machine washable, easier to keep clean and comfortable.