Feature:1. Practical to Use: The diving inflatable nylon buoy ensures that divers can be seen in the open ocean.2. Safety Assurance: The diving surface marker buoy has a builtin overpressure safety valve that allows the pipe to rise without rupture.3. Unique Design: With safety reflective tape for high visibility and ruggedness. Mouth valve design (oral inflation only), but very effective.4. Essential Tool: The diving surface marker buoy is a necessary life saving tool for divers, similar to the role of a swimsuit.5. Convenient to Use: The main function is to float on the water surface for alerting the incoming and outgoing vessels.6. Widely Used: The diving safety signal tube is suitable for safe diving, snorkeling, spearfishing and other underwater activities.Specification:Item Type: Diving Surface Marker BuoyMaterial: NylonSize:Length: Approx. 124cm/48.8inWidth: Approx. 15.8cm/6.2inApplicable: For Safety Diving, Snorkeling, Spear Fishing and Other Underwater Activities in Large Equipment..Package List:1 xDiving Surface Marker BuoyNote:Manual measurement please allow some errors.