Eco Four Twenty Starter Set Personal Air Filter with eco-friendly replacement filter system by Eco Four CAD$56.98 | / Inventory : 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart EASY TO USE: Using this product ensures that your room has clean air and no bad odours. HIGH QUALITY MATERIALS: NO CHEAP PLASTIC PRODUCTS. WE USE Aircraft Grade Aluminum Casing and 2 Stage Medical Grade Filter. Activated Carbon Filter + HEPA Filter REPLACEABLE CARTRIDGES: Instead of Buying a Whole New Filter, Simply Replace With a Cheap, Easy To Change Replacement Filter! Also Has Removable Mouthpiece and Cover for Easy Cleaning LONG LASTING: Lasts Up to 500 Exhales Before Needing to Be Replaced. The Average User will use this for 2-3 months before needing to replace. LIFETIME WARRANTY AND 100% COVERED BY MONEY BACK SATISFACTION GUARANTEE by Eco Four Twenty.