SKLZ CORE WHEELSSKLZ Core Wheels Ab Trainer is the dynamic tool to take your core workout to the next level. Take your planks, pushups and pillar exercises to a new level with the CORE wheels dynamic core strength trainer. The rolling wheels on each side destabilize your movements, causing your shoulders, torso and hips to work harder than ever before. Features ergonomic foam handles, lightweight design, and a training guide to get you started. Develop pillar