[. . . ] Customer Notice Thank you for your purchase of the Moog Infinity Set. [. . . ] When using the set within a backpack, thread the Velcro® straps through the loops, then around the funnel and secure tightly. Cap & Funnel The easy-to-secure cap and funnel is the most noticeable change to the set. Unlike other caps, the new design requires a quarter turn to ensure a secure closure. Anti-Roll Flange The addition of this new feature reduces the chance of the bag folding over on the tubing exit port. It is Moog's intention to transition to the new sets as quickly as possible. For a period of time, a possibility does exist that you will receive a case of sets with the former design. The performance of both sets, regardless of which one you receive, is consistent with Moog's commitment to our customers for quality, flexible and easy to use products. If you have any questions, please contact our Technical Support Team at (800) 9702337. [. . . ] Thank you for being a Moog customer and we look forward to serving you in the future. [. . . ]