Improve Strength & Conditioning: This wooden rocker board physical therapy is designed to stimulate your core and improve your agility, reaction time, and stamina, this low-impact exercise board is great for all Compact, Portable Trainer: At 17.5 x 13.5 x 3 in size, our lightweight balance exerciser / fit tilt board can be used at therapy or training at home, the gym, or while traveling. A perfect standing desk accessory Slip-resistant Surface: The top of each rocker balance board features an easy-grip surface thats gentle on bare feet but helps keep you in place safely and securely Strong, Stable Base: Made of high-quality Lauan hardwood plywood from sustainable, plantation-grown timbers , stronger and last longer than others made of birch and pine plywood. This heavy-duty balancing board can hold kids and adults up to 350 lbs