Are you looking for a better way to burn more calories than original walking or running? Get out there and hit the trail with Yes4All ruck weight must-have equipment for ANY active Hiker: add resistance to your walking, jogging, running to burn fat, build up strength and muscle mass. Provide a varied range of bodyweight exercises, including presses, crunches, sit-ups, squats, lunges, and more. Strengthen your hip & posture stability, making you less injury prone. Built-to-last construction One solid piece cast iron construction: enhance the durability and toughness of the weight plates. Anti-rust coating: Black paint finish prevents rust and corrosion without any unpleasant odor. Convenient on-the-go handles: The additional handles allow you to grasp the plate with both hands, making it easy to add and remove the plate from your rucksack or use it for an overhead press or a squat exercise. Vary in weights: available in 10, 20, 30, and 45 lb. options. Multiple Weights are suitable for both men and women, beginners to advanced levels. Just slide the ruck weight into your laptop compartment sleeve and begin your adventure Product specifications 4 weight options Available: 10lbs: 5. 7 x 8. 9 x 0. 9 inched 20lbs: 14. 8 x 6. 9 x 0. 9 inched 30lbs: 14. 8 x 9. 4 x 1 inched 45lbs: 14. 9 x 9. 5 x 1. 4 inched material: solid cast iron Color: Black paint finish 1-year and 60-day return.