Healthy Materials: We have developed 0.3cm skin friendly flannel inside the dog bed xl, It will closely adhere to the dog's body to ensure warmth, breathable function and resist saliva/sweat/urine/no odor to prevent skin diseases, practice has proven that dual color oval pattern can soothe dogs' emotions; the external material is anti biting Geometric stripes design; The bone strips at the joints make the large dog bed more solid, Greatly increase the service life. Archie & Oscar