Buy the Columbus Outdoor Phone waterproof frame bag from Escapa; it attaches to the frame just behind the stem.
Lightweight and resistant to water splashes and mud, it features a zippered compartment and a top holder with a touchscreen window for operating your smartphone. Its dual Velcro fasteners—one on the frame and one on the stem—allow for easy and convenient installation and removal.
It’s the ideal bag for storing tools, keys, and your wallet while keeping them in plain sight. It features reflective elements.