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 everywhere - in your room, in vehicles, in crates, etc. Easy to clean - The dog mat is machine washable, easier to keep clean and comfortable. Notes-This dog bed is vacuum sealed, when you open the package, please put it aside for about 24-48 hours to let it come back to full state.