The SKLZ COREwheels is a great way to develop your shoulders, torso and hips with a wide-variety of exercises that take strength building to the next intensity level. The COREwheels apparatus is uniquely constructed with wheels on each side to provide safety and better ground control. The ergonomic foam handles are comfortable and the portable lightweight design make the SKLZ COREwheels a wonderful tool for adding difficulty to your planks, pushups and pillar trainings at home or on the road.