16-Cell Extended Battery for FreeStyle Comfort Portable Oxygen Concentrators CPRO2-FP This Starter Kit includes 4

This Starter Kit includes 4 Bongo RX sizes--Small

It is compatible with all H4i Heated Humidifiers as well as HumidAire 3i (H3i) Heated Humidifiers that have been upgraded using the H4i Flip-Top Lid with Seal (Part 26953) or the H3i-to-H4i Upgrade Kit

AirFit F10's SoftEdge headgear features slim rolled-edge straps that provide support without over-tightening or pinching

long-term comfort for oxygen delivery flows up to 15 LPM

The AirMini F30 Setup Pack has all the components needed to connect AirFit F20

16-Cell Extended Battery for FreeStyle Comfort Portable Oxygen Concentrators CPRO2-FP This Starter Kit includes 4This Extended 16 Cell Rechargeable Battery for FreeStyle Comfort is offered as an additional option for people who are looking to get more time out of their FreeStyle Comfort than what the typical battery that comes with the concentrator provides.