GREAT FIT - Front compartment dimensions 9.5 x 4.5 x 10.7 inches. CURMIO POC backpack is compatible for Inogen* One G3, One G4, One G5, Philips* Respironics SimplyGo Mini, OxyGo*, OxyGo* FIT, NEXT and Caire* FreeStyle Comfort Units. (Bag only, machine NOT included.) (*CURMIO carrying case is unrelated to brand referred.) FRONT COMPARTMENT - Designed with inner bungeecord to secure your oxygen generator in place. The mesh design ensures the ventilation and heat dissipation of the battery while machine working. WELL DESIGN - Top transparent flap with buckle clip for easily viewing display screen. Nasal cannula or charging cord can come out from 2 hose outlets or both sides of the top. Two-way zippers closure can be full opened for convenient taking your machine in and out. MULTI STORAGE - Main compartment with mesh pocket is large enough to store 14” laptop, batteries, instruction or your personal items. Back anti-theft pocket can hold value items. A detachable insulated bottle holder for storing your water bottle outside. EASY TO CARRY - Comes with top handle and adjustable shoulder straps for convenient carrying on the go. Padded shoulder straps help relieve the stress of your shoulder. Great idea for travelling, walking or shopping. CURMIO Portable Oxygen Concentrator Backpack, POC Carrying Bag Compatible for Inogen, OxyGo and Caire Units, Bag Only, Gray (Patent Pending)