IMPROVE STRENGTH AND CONDITIONING: Our wooden rocker board is designed to stimulate your core and improve agility, reaction time, and stamina. This low-impact exercise board is great for all. COMPACT AND PORTABLE: At 17.5 x 13.5 x 3 in size, our lightweight balance exerciser/fit tilt board can be used for 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 AND 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 350lbs.