EZDIVE Hi-Viz 6.5" Wide Scuba Diving Surface Marker Buoy (SMB) 400D Polyurethane Coated Nylon,Yellow

Features:

Excellent Signaling Devise
High Visibility Yellow
Great for night diving and deep diving
6.5 inch wide / 43.3 inch tall (110 x 16.5 cm)
Approximately 40 lbs. (18.1 kg) of lift
Folds up to compact size
Open Circuit
Yellow Safety sausage,surface marker buoy (SMB) indicates a problem,such as shortage of gas,then the surface support should investigate and resolve.