Features and Benefits Exclusive SNAPP Bellows Cushioning bellows expand and compress with patient movement.Provides a comfortable, secure seal even for those active patients. NEW Quieter Exhalation Port Array Quiet airflow, even at high pressures. Airflow directed down and away from bed partner. Unique Heagear Attachement Tabs Reduced torque on swivel elbows. Enhanced stability and reduced risk of disconnects Patent Pending Nasal Prong Design No internal pressure points to cause nasal irritation. Special 3600 Swivel Elbows Patients may choose their preference how to wear SNAPP 2.0 Direct Nasal Interface. Swivel enables the cushion to self-adjust to correct angle for prong insertion in any position. Available in four sizes (without headgear): 11689 sml 11690 med 11691 lrg 11692 x-large SNAPP 2.0 Direct Nasal Interface Headgear Fully Adjustable Style. Straps at top of the head allow SNAPP 2.0 Direct Nasal Interface to be worn in an over the head position. Available in four sizes (with adjustable headgear): 11685 sml 11686 med 11687 lrg 11688 x-large 11697 SNAPP 2.0 Start-up Kit (includes one 11686, one 11695 and one 11696