Brian’s Retractable bag prototype

This backpack is designed for cyclists. It expands and retracts depending on the amount of things that need to be carried. It can attach to the bike when it is too heavy, too. Brian designed this bag for cyclists who often visit new locations for work. Brian was released from prison before he finished this ambitious project, but told us he would recover his late mother’s sewing machine in order to continue making.
Anti-theft element: The bag can become smaller when you are not on the bike, allowing you to keep your valuables with you at all times.