Best Travel Scuba Regulators: Lightweight Models Under 3 lbs with Full Performance Specs I've dragged a lot of regulators through airport security over the years. Some made the trip easy. Others—particularly the older, tanklike brass models I started with—turned my carry-on into an arm workout before I even got to the dive site. When you're packing for a liveaboard in Indonesia or a week in Cozumel, every ounce matters. The best travel scuba regulator doesn't just save weight—it delivers the same breathing performance you'd expect from a full-sized model while surviving baggage handlers, saltwater exposure, and the chaos of daily boat diving. Here's the quick verdict: weight and performance don't have to be trade-offs. Modern materials—titanium, aerospace-grade aluminum, fiber-reinforced nylon—have made it possible to build regulators under 3 p ...