TDS Xtrem diving surface marker buoy SMB 150 cm legth in red color. The inflation is realized by plastic valve with a bc hose, wing hose or dry suit hose. Also allows the buccal inflation.
Thanks to its closed system, the air remains in the interior preserving the shape of the buoy, keeping it erect and comletely inflated on surface. It´s also possible to use as a bouyancy emergency element on the surface.