Chinchilla Guinea Pig Rat Hedgehog Soft Fleece Sleeping Bed House Cozy Nest Mat Small Pet Soft Fleece Sleeping Bed. Waterproof bottom fabric. Made Of High Quality Fleece, Raincoat Fabric, sides filled with sintepon. Size approx:11,5in x 11,5in x 3in. Hand or machine wash on gentle cycle. Tumble dry on low heat only.