The diving buoy marker signal tube has a reflective strip on the top, for maximum visibility, drawing people's attention, and allowing to find your position quickly. The "Diver " markings the divers be in safety, really an indispensable accessory for diver location markerSafety inflatable surface buoys can be filled using the inflator, or you can also use a standard BC hose to inflate. A dump valve will allow any excess air to escape, quickly deflate after using for storage, giving you a convenient experience. safety buoy is made of 210D Nylon Fabric with a TPU coating for added strength, with an overpressure valve that allows the tube to ascend without rupturing. Built to greatly quality control standards, so it has stable performance and workmanship.Surface marker buoy () is simple effective diving equipment used by both amateur and experienced divers. Also known as diving marker buoys, these safety flotation devices make scuba diving as they let people on the surface see the general location of divers from afar.Safety sausage is great gear equipment for safety scuba diving, snorkeling, spearfishing , traveling diver and other underwater activities.Colour:fluorescent yellow:Nylon+TPUSize: 180 x 18cmPackage Contents:1 x Surface Marker BuoyOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.