fma navigation board rotary for gps phone black Work in progress Worth noting: the roll top is Worth noting: the roll top is not waterproof in the way a heat welded system is — it handles light rain and splashes well The water resistant main compartment zipper protects electronics and sensitive materials even in rain The 180° rotation mechanism across three preset angles lets you switch between portrait and landscape reading without removing the device but offers lower retention than a rigid holster or a system with a mechanical locking catch: anyone operating in environments with a high risk of physical contact or frequent falls should consider whether the elastic velcro restraint is adequate for their context