The K&H Pet Products Thermo-Pet Nest cat bed is a fun, soft foam, fleece heated cat cave that is a sure winner with all pets. Provides a warm and cozy cat nest to fulfill any pet’s privacy needs. Roof can collapse and be used as a cuddle heated cat bed offering two shapes of sleeping comfort. Comes with a 4-watt removable heater for use in all seasons, simply remove the heater in summer months if desired, although your kitty or puppy might not want you to! Perfect size for all cats and small dogs too. This heated cat bed has been tested & certified by MET Labs and exceeds USA/CA electrical safety standards; K&H doesn't just use safety listed parts, we safety certify the entire product. Designed by K&H with OVER 20 years of experience in creating safe, innovative, quality products for pets; includes a one-year manufacturer warranty. Our products are designed to only warm when your pet is lying in the bed. Test the bed by placing a large pillow on top of the bed. After about 20 minutes, feel under the pillow. It will feel warm, not hot. If you feel warmth, the product is working as designed. For indoor use with 110/120 volt electrical current only.