Bags and Backpacks
Energy and light
Safekeeping and storage
Imitated but never equalled: The BCB Signalwhistle.
Its highfrequent sound is audible much farther than any human voice and costs you less on a calorie/decibel ratio.
Light, small and effective: It would be stupid not to have it in your pocket.
6,0 x 2,0 x 1,0 cm, 6 g