Timing Shelf Fitness Trainer for Waist & Abdomen ExerciseProduct Details The Timing Shelf Fitness Trainer is a versatile piece of equipment that is perfect for people who want to improve their fitness and strengthen their bodies. The device can be used for a variety of different exercises, such as push ups, sit ups, and crunches. It also has a timer function, so you can track your progress and see how long you can keep going for. The device is made from high quality materials and is built to last, making it