This functional backpack with robust construction and simple design features soft mesh shoulder straps

100% Waterproof

If you catch the 4 minute or the 1 minute instead of the 5 minute signal

Anti-Flush Wrist Seals

Moisture wicking breathable and fast drying for uninterrupted comfort during exercise and activity

Wichard FRX15 - Friction ring Part #21510 mbf This functional backpack with robustFRX Wichard thimbles are efficient, light and reliable. Very strong, they can be used for heavy loads and semi static lines. FRX thimbles are designed to make your lines run smoothly with minimum wear. They are hard anodized (50 microns) for a longer lifespan. Applications Mast foot block, barber hauler, inhauler, loop, thimble, lazy jack, running backstay, tackle, and more.