The 838-PKT has the same features as a 838, but has an additional side pocket. This pocket measures 21 In. X 7 In. X 2 In., which is suitable for storage of items such as canullas, oxygen masks, tubing, etc. Fully padded to carry your oxygen cylinder, regulator and accessories. Padded with a high density foam. A removable inner liner for ease of cleaning. This bag has 6 pockets with tie down straps for your oxygen cylinder, elastic airway loops and a padded flap to cover the regulator for extra protection. Handles run completely underneath the bag for support, has a nylon coated vinyl bottom for extra wear and has a shoulder strap. Made of Cordura® nylon.