CHUCKIT AIR FETCH WHEELThe Chuckit! Breathe Right Fetch Wheel is designed to make playtime last longer as it features a hollow, web like design that facilitates healthy air flow in to the dog's lungs during playtime. The design of the Breathe Right Fetch Wheel helps to improve stamina and reduces downtime after intense games of fetch. Made from durable rubber that is gentle on dog's mouths.