Yeah my bad on the name. LeisurePro has them for like 56 bucks, its under OMSEDS. Basically its an overpriced piece of nylon with holes in it. surgeical tubing is what you thread through the holes to hold your SMB's (it comes with that) and the bottom has a pouch for their overpriced canister. Mine is mounted to the butt part of my harness using stainless steel rings. I really didn't look at your BC but you can find pouches that have an expandable cord on the outside you can store a marker there. The ABYSS pouch on my rig is that way. Just think you'd have a problem adding pouches to a BC. Take a look at my gallery pics, it shows the OMSEDS with a yellow and red SMB at the bottom of my kit. Hope this helps