Give your dog the coolest, softest spot in your house, all year round! Simply fill with water and instantly your dog will enjoy the ultimate in comfort. Unique dual core water and foam construction allows for reversible cool in the summer, warm in the winter versatility that cushions your dogs tender joints and bones like no other pet bed. Made of durable pvc that wipes clean and won't allow pesky ticks or fleas to burrow and lay eggs. Use indoors or out!Easy to cleanWarm / ColdFill with water for comfort and supportCushions tender joints and bones