1 MONTH USE: This set of 3 Crisp Mint Cores contains 9 cores total, which will last around 1 month. NON-HABIT FORMING: Formulated with natural plant extracts for rich, interesting flavors. THE GOOD HABIT: The cost of Cores monthly is only 10% the cost of today's most common bad habits. COMPATIBILITY: To our day one fans, these core packs are only compatible with FÜM V2. CORES ONLY: This 3-pack includes Spear Mint, Black Licorice, Cinamom hearts Enjoy all 3 of our Original Cores with this multipack!