Hollis Signal Marker BuoysThe Hollis Signal Marker Buoy (SMB) is a great safety devise that all serious divers carry on every dive. The SMB is the smart way for a diver to mark their location when making safety stops, completing mandatory decompression stops and signaling the boat if they surface a distance away from the boat. The Hollis Marker Buoy is a Closed Cell Design made from Durable 300 D Polyester material with Radio Frequency (RF) Welded Seams. The Hollis SMB also
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