Large Enough To Hold A D Size Oxygen Tank, Multiple Equipment And Supplies Yet Small And Durable Enough To Be An Everyday Carry Bag.Dimensions: Exterior ? 29? L X 13? W X 12? HInterior ? 4,524 Cu In; Weight: 7.7 Lbs- Main Compartment Features Ample Space For Equipment And Supplies With Multiple Sizes Of Elastic Holders And A Removable, Padded Organizational Divider- The Padded Oxygen Tank Compartment Holds A D Size Oxygen Tank And Regulator- The Left End Of The Bag Provides Full Access To The Regulator And Shut Off Valve With Opening The Full Case- Two Zippered Front Pockets Can Accommodate Smaller Supplies And Equipment- The Bag?S Inner Lid Includes A Full Length Mesh Pouch To Store And Easily Locate Supplies- Two Rear Zippered Pockets Hold Bulky Trauma Supplies With A Row Of Elastic Loops- Full Length Back Pocket Can Hold Cervical Collars And Other Immobilization Accessories- Ergonomic Adjustable Padded Shoulder Strap For Comfort- Nylon Reinforced Hand Straps