The Fisher Paykel FlexiFit 405 CPAP Mask and Headgear Combo is united with the Aclaim 2. It has the same "Fit and Forget" technology which affiliates a unique foam cushion shape and headgear design for a comfortable, reliable fit. The upgraded FlexiFit 405 now features newly designed hose connection which swivels instead of Acclaim 2 design where it is fixed upward and over the head. Comes with 2 different size cushions: Small and Large.