Breed Recommendation: Suitable for small pets of all sizes. Special Feature: This product offers CertiPUR-US Certified Orthopedic Memory Foam, a long-lasting zipper, a removable and machine-washable cover, reversible cooling and self-heating fabric, and a waterproof TPU inner liner. Material: Memory Foam, Polyester. Product Dimensions: 25.59L x 25.59W x 8.27Th. This self-warming calming donut dog bed provides a high, plush bolster ring for your pet to curl up in, offering a sense of security and relaxation. The raised rim supports the head and neck, similar to a built-in pillow, which is beneficial for soothing anxious small dogs, puppies, and indoor cats, promoting deeper and more restful sleep. It's a super soft dog bed that comforts clingy or nervous pets and is gentle on sensitive skin and noses. The base of this bed uses a CertiPUR-US memory foam cushion for real orthopedic support, unlike typical fluffy-only donut beds. It helps distribute weight and ease pressure on joints, neck, and spine, making it ideal for small breeds and senior pets that need support for IVDD, arthritis comfort, or joint relief. The round cushion is reversible, offering all-season comfort. One side is self-warming, ultra-soft sherpa for cozy winter naps, while the other side is smoother and more breathable to prevent overheating in warmer months. This means you don't need to buy separate beds for different seasons. A built-in TPU waterproof liner helps block accidents, drool, and spills from soaking into the memory foam base, reducing odor buildup and keeping the bed fresher, especially helpful for puppies or senior small dogs. The non-slip bottom keeps the donut bed from sliding across hardwood or tile. The donut bolster cover and the center cushion cover are both removable and can be washed in the machine, making it easy to keep the calming bed clean and low-odor. The covers feature reinforced seams and a durable zipper that can withstand repeated washing and reassembly.