Run out of CO2? Purchase this box to join the refill program and send your 2 empty canisters back to Ninja. <br></br> Once you receive the box, place your empty CO2 inside, adhere shipping label provided and send off to get two more canisters at 30% off.<br></br> <p><b>What you get:</b> <ul> <li>Refill Box that fits 2 60L Canisters (assembly required)</li><li>Free shipping</li> <li>Prepaid shipping label</li> <li>Use this box if you have empty CO2 and want to refill them at the discounted $41.99 for 2 CO2</li><li>You need to login or create an account to take advantage of these exclusive perks.</li></ul></p>*No purchase necessary if you have already purchased CO2 canisters and opted into the Refill Club.<p style="color:#808080">Canada, HI, AK, GU, PR shipping not available</p>