Yes4All RUCK Cast Iron Weight Plates for Backpack, Multiple Sizes Swing, Squat, Strength Training, Fitness Workout and Home Exercises

3-IN-1 DESIGN: with a circular 2-inch hole at the center, this ruck weight easily connects to an olympic barbell for maximum workout diversity; Use it as a rucking backpack, kettlebell, or weight plate for exercises with or without a barbell CAST IRON WEIGHT PLATE: Heavy duty cast iron made and protective paint finish ensuring absolute durability; Yes4All ruck weight stands for years without corrosion or breaking apart; Moreover, this new version allows flexible transformation to weight plate for muscle strengthening and endurance training BUILD ENDURANCE, BOOST STRENGTH, MUSCLE MASS AND IMPROVE YOUR BALANCE: Add ruck weights to your jogging or hiking; use weight plate as a flexible piece of equipment for variety of exercises to hit full-body muscles WIDE, COMFORTABLE HANDLE: New design provides wide, rounded comfortable handle giving you a tight grip during your weight plate exercises as well as to easily add and remove it from your rucking backpack ERGONOMIC, ROUNDED EDGE: Four rounded edges to fit into standard laptop compartments or elastic interior pockets; Plus, the smooth-edge design protects the floor and your ruck plate