BLACKHAWK! O2 Sleeve with Hood Constructed of 1000 denier nylon with reinforced stitching for durability; 2231 cu. in. Large yellow pull tabs with reflective cording; heavy-duty nylon handles with reflective tape; pack also features reflective gray piping High-quality padding protects oxygen tank and regulator External compartments are lined with mesh sections Two external storage pockets with elastic strip to hold supplies