Part of the Dream Chaser line, and like the rest of it the cover is reversible — one side sleeps cool, the other sleeps warm, so the same bed works in a Miami August and a January cold snap. This is the flat cushion rather than the bolster — no raised sides, built for dogs that flop out flat and sprawl. Medium, 30" x 19". Top and fill are polyester, the sides and bottom are a cotton-polyester blend. Machine wash cold on gentle, tumble dry low, non-chlorine bleach only.