Its all about the crunch! KONG CrunchAir creates a crunching sensation that delights dogs while fulfilling their natural chewing and chasing instincts. The KONG CrunchAir features an ideal bounce that is great for interactive play. Its also durable, making sure that fetch, chase and chew sessions last even longer. Add to that the KONG Tennis material that is uniquely designed to be gentler on teeth and gums and dogs are sure to be rewarded again and again.