Brownie’s oval-shaped “Boat tube” is designed to support the THIRD LUNG™ system with a very low center of gravity providing maximum stability. The construction of the tube assembly begins with a radio frequency-welded inner bladder made of inflatable boat materials and a large-bore boat-type air valve for reliable inflation and rapid deflation/storage (ever try to deflate a tire tube after a great day of diving?). The outer cover is made from an ultraviolet stabilized Ballistic Nylon that acts as a barrier for the tube from the sun and is tough enough to resist abrasion and puncture. All seams are double-stitched and stress points are box stitched with extra backing panels for the best support. Extra-wide webbing straps with corrosion-proof buckles and snaps are ready for years in the sun. Heavy-duty YKK zippers resist jamming and can be rinsed clean.
- Easy inflation – Integrated check valve, so air won’t seep out unexpectedly. Inflate tube straight from compressor unit, no extra tools necessary.
- Easy deflation – lock open feature, can be totally deflated in less than 30 seconds.