Tiger Dreamz 3 in 1 trundle bed can convert into a small nest bed, a sac or can be opened up into a large mat. Trundle style, when folded up in "Cup Format" measures 15 inches in diameter. When in sleeping bag format the trundle measures 24 inches long. Laid flat, fully extended, the trundle measures 24 inches by 44 inches. Created to mimic the feel, beauty, softness and luxury of real fur (but it definitely isn't).  Tiger Dreamz products are machine washable in warm or cool water, but please do not use any heat when drying. Air or line dry to keep the fur beautiful.