The TUSA Rescue marker and SMB (surface marker buoy) is an invaluable tool for any diver, no matter your experience. An SMB shows that a diver is down and alerts the surface exactly where you are in the water.
 

> Safety tube that inflates with regulator air.
 

> Check valve prevents air from escaping.
 

> Inflator/Deflator valve for easy operation.
 

> Dimension (L x W) - 71” × 5” in / 1800 × 135 mm