Fatima Haidari, second from the right, and her bike riding club caught the attention of Humans of Kabul — the Afghanistan version of the popular Humans of New York blog. David Fox/Courtesy of Humans of Kabul hide caption

toggle caption David Fox/Courtesy of Humans of Kabul

The Morpher folds in half from a full-size bike helmet so that it can be stashed away in a laptop or shoulder bag --€” something urban bike-share cyclists might find especially appealing. Courtesy of Morpher hide caption

toggle caption Courtesy of Morpher