The Philosophy Gym Cast Iron Ruck Weight is an excellent, versatile fitness weight. Constructed of heavy gauge cast iron, with a smooth, wide handle, this fitness weight is a must for anyone’s gym equipment collection. The exterior finish is smooth and black, and designed to protect the weight from corrosion and damage for years to come. These compact weights are stackable, should you wish to increase the weight. Ideal for strength training exercises, this ruck weight can be used for military training, rucking, and numerous other types of exercises like swings and squats, as well as cardio like hiking and jogging. Used in these kinds of exercises, you can burn calories, build muscle mass and strength, improve aerobic capacity, and train your body to resist injury. Made to work inside of a backpack’s laptop pocket or interior elastic pockets, the weight’s smooth, rounded edges and corners are ergonomic and safe. As a backpack weight, the shoulders and back are forced into correct alignment, enabling proper posture. It is also an excellent weight to build strength and stability in your shoulders and hips. Philosophy Gym provides professionally designed fitness equipment with exceptional durability to meet all your workout needs.