'Dive Alert' 114x12.7cm Deluxe SMB with added utility pocket and plastic filler tip (SMBP)

The DiveAlert Surface Marker Buoy features a one-way valve construction, which prevents air spill at the surface.  Inflate on the surface to attract attention or redundant flotation.  Inflate at depth to send up as a surface marker.  Solas reflective tape across the top of the SMB creates better visibility day or night.