1. Size Selection: S diameter 40cm, suitable for pets weighing 00.9kg; M diameter 50cm, suitable for pets weighing 1.42.3kg; L diameter 60cm, suitable for pets weighing less than 11.3kg; XL diameter 80cm, suitable for pets weighing up to 25kg. The weight is for reference only; please measure your pet's body length when . 2. Comfortable Materials for Deep Sleep: Our dog mat is made of super soft, quality flannel that is warm and cozy. Both sides are usable, providing a longlasting dry environment for your cat or dog with ventilation—no odors, just rest. Ensure your loyal companion enjoys a good night's sleep every day. 3. Multifunctional Pet Bed: This soft and flat pet mattress is suitable for dogs, rabbits, and cats. Crafted from flannel and filled with cotton, it offers a comfortable crate mat that protects small dogs' spines and benefits older or disabled pets. 4. Thoughtful Thickness: While keeping the bed design simple and the thickness moderate, it still delivers a cozy experience for your pet. Give your furry friends a comfortable spot to rest and recharge.