A complete training system, the DisruptiveStrong Workout Bag is soft enough to strike but strong enough to take abuse. The firm yet flexible inner core and the soft, shock-absorbing outer shell are two key qualities that allow you to lift, strike, slam, and drag this remarkable tool. From military-grade vinyl to double and triple stitching to soft, resilient silicone handles, the DisruptiveStrong Bag was built for comfort, sleekness, and longevity. The included Shotbells were custom-designed to allow one DisruptiveStrong Bag to range in weight from 10lbs to 110lbs. They can also be used as a dumbbell, kettlebell, barbell, medicine ball, and slam ball without bursting or damaging floor surfaces.