About this product: Weight-bearing exercise 2.645-pound weight that can be worn on the wrist and ankle for exercise The front of the product is made of breathable mesh fabric, and the back is made of fabric that fits human skin. The middle adopts an elastic elastic band + Velcro adhesive design, and the tightness can be adjusted. It has a built-in thickened sponge layer that acts as a cushion, making it softer and more comfortable. You are free to adjust the weight you want to use. High quality, non-toxic, perfect for endurance training, running, workouts, hiking and all kinds of aerobic activities Package Included: 2 wrist straps and 12 0.22 lb metal rods, each wrist strap has 6 metal rod slots Can be used for running, jogging and various hand and leg exercises