Which of these items is NOT recommended as protective gear?

The item that is not recommended as protective gear is flip-flops. When riding a motorcycle, it's crucial to wear appropriate protective gear that effectively minimizes the risk of injury in case of an accident. A full-face helmet is designed to protect the head and face, providing substantial safety against impacts. A leather jacket serves as a protective layer against abrasions and cuts, offering insulation and protecting against the elements. Motorcycle gloves protect the hands not only from weather conditions but also from potential injuries during a fall.

On the other hand, flip-flops do not offer any protection for the feet. They leave toes exposed and fail to provide ankle support or cushioning. In the event of a crash, wearing flip-flops could lead to serious injuries. Therefore, footwear should be sturdy, secure, and able to protect the rider's feet effectively, making flip-flops an unsuitable choice for motorcycle riding.