https://www.youtube.com/embed/HzXL3st83mg The No Rules Weighted Vest allows you to push your body to the limit with additional weight training. It's versatile and has adjustable weights so you can work different muscles throughout your body. Filled with iron and sand. 8 kg: 100% sand 10 kg: 70% sand 30% iron 15 kg: 70% iron 30% sand 20 kg: 100% iron Allows adjustable weight located in 19 pockets distributed throughout the surface of the vest. Product height : 41 cm Product length : 10 cm Product width : 44 cm