Designed to be able to be used as part of the EMT pack, the O2/NOX Sleeve also has its own basic harness enabling it to be carried independently for ski patrol or separate use. Padded sides make for carrying comfort and a degree of protection for the cylinder, and a partial polypropylene sheet stiffen the flap over the regulator. An internal mesh pocket inside the top flap and a larger 3D pocket outside give plenty of storage space for different size masks.