The Smokebuddy is a handy and reliable bust-saving air filter. Simply exhale smoke through one side and odorless air comes out the other! Up to 300 uses! You can smoke where and when you want without anyone knowing the wiser. Every Smokebuddy comes with matching travel caps for discreet storage, and a FREE Mr. Smoke Buddy key chain (with nifty LED light)! Environmentally friendly product. Convenient and compact.