SKLZ 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 strength in your shoulders, torso and hips through a variety of exercises with the SKLZ Core Wheels Ab Trainer. Blast your core and maximize your flexibility while continuing to tone muscles on your entire midsection. The wheels allow for a variety of exercises from a variety of angles to make sure your workout never gets boring. Say goodbye to the regular, boring ab workouts and say hello to the innovative SKLZ Core Wheels Ab Trainer for new dynamic exercises. Gender: unisex. Age Group: adult.