In China motorcycles, not riders wear the biker jackets
In the Chinese cities we visited on our recent choral tour, many scooter and motorbike riders use these padded bike jackets to guard against cold and wind. They come in various patterns, including Hello Kitty (left). I saw one woman riding in heels and a short skirt. The wall of fabric in front of her knees protected her modesty as well as keeping her legs warm. Jackets are left unguarded with the bikes, as are the contents of bike baskets. Nobody worries that others will take their belongings.