A weeks worth of travel-friendly gear, no checked bags, under 20 lbs. Can your BC do this? The one size fits all JetPack combines the comfort of a BC harness with the performance of an adventure-style backpack. BC and backpack clip together for carry-on travel, protecting gear and saving on baggage fees. The backpack detaches for diving, leaving a full-featured BC with 30 lbs of lift capacity, weight integration and a custom fit.