The Hollis CRIB Custom Dual Tank 50 Wing Package is a backplate and wing system designed for technical twin-cylinder diving where higher buoyancy capacity and equipment support are required. Built around the Hollis DT 50 donut-style wing, this configuration is intended for divers using heavier steel doubles, additional stage bottles, or extensive cold-water exposure protection. The system integrates the CRIB custom harness and backplate platform to provide a stable, modular foundation for advanced diving applications.

The DT 50 wing delivers approximately 50 lb (23 kg) of lift and features a donut-shaped bladder that promotes even gas distribution around the wing. This design supports consistent horizontal trim and controlled buoyancy adjustment throughout all phases of the dive. Constructed with a durable 1000D Cordura outer shell and a reinforced internal urethane bladder, the wing is engineered for abrasion resistance and reliable performance in demanding environments such as technical diving, overhead environments, and extended range dives.

The CRIB custom harness system is built to interface with a standard technical diving backplate, supporting secure twin-cylinder mounting with manifolded doubles. Adjustable webbing and multiple attachment points allow configuration over thick exposure suits while maintaining a streamlined profile. Hose routing is arranged to reduce clutter and improve accessibility to valves, regulators, and accessories commonly used in technical diving setups.