Halcyon Big Diver's Alert Marker, 4.5' (1.4 m) Long, Closed Circuit, Yellow

This 140 cm high-visibility diver's alert marker delivers a reliable surface marker buoy for technical and recreational dives, designed for clear identification at the surface. Constructed from abrasion-resistant coated fabric with an inflatable bladder, it uses an oral inflation valve and a dump valve for controlled deflation. High-visibility yellow with reflective accents improves daytime and low-light detection, and reinforced attachment points accept reels or spools for secure deployment. The marker is lightweight and packs compactly for storage on a harness or in a gear bag.