An act of repurposing to give a rider’s hands shelter from the wind, and also a weak signal of an advertising opportunity for the right business (not to mention a design opportunity that would obviate the use of zip ties and needing to punch holes in your wind protection). Bike helmets are likely too costly to give away, and the little reflective snap-bracelets don’t have much real estate upon which to tattoo your brand.
Based upon the display of the visibility bracelet on the stem of the bars, it would appear there may be a design opportunity to explore in eliminating the hassle of having to put on a separate “wearable” each ride (one for visibility in addition to one for cranial preservation) and endowing these hand-protecting bags with reflective properties.