Scuba Diving 4ft Surface Marker Signal Tube with Pouch, Whistle & 36' String

• 4‑Foot High-Visibility SMB: Inflates to 4 ft (1.2 m) tall, making you easy to spot at the surface or by boat crews.

• 36 ft (11 m) Durable Line Included: Strong nylon tether helps maintain position during safety stops, drift dives, or noisy/surfacing zones.

• Whistle & Stash Pouch: Safety whistle and compact storage pouch clip easily to your BCD for practical dive carry and signaling capability.

• Reliable Inflation & Deflation Valve: One-way dump valve enables controlled rapid inflation and easy deflation for travel convenience.

• Essential Dive Accessory: Ideal for scuba, freediving, tech, or tech-sidemount diving to improve surface safety and boat visibility.

Enhance your surface visibility and dive safety with the Scuba Choice 4 ft Surface Marker Buoy (SMB) kit. This tall, inflatable tube is made of rugged, puncture-resistant PVC and stands a full 4 ft tall when deployed, offering excellent visibility to boat traffic and surface monitors.

Includes a 36 ft (11 m) quality nylon scaling line—ideal for drift or decompression group control. A safety whistle stored in its pouch ensures audible signaling if needed. The one-way valve makes inflation easy with low air, while the dump valve allows quick collapse for streamlined packing.

Whether you're a recreational diver, freediver, or working tech rig, this SMB is an essential dive tool for signaling location, conserving air at the surface, and ensuring dive safety.