- 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
- 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
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