Cave, wreck and technical divers have long worn a backup reg on a necklace to keep it within easy grasp, and the technique has trickled into the sport-diving arena. As an alternative to oxygen tubing and zip-ties, Manta Industries now offers a necklace made from high-grade, durable silicone rubber. This solid-core material is negatively buoyant and highly resistant to deterioration. Perfectly proportioned to keep a second stage secure yet easy to release, it comes in regular and extra-large sizes and a bevy of colors.

MSRP $9.95 (standard size)

Contact http://www.mantaind.com/