The Original Indo Board Roller Balance Trainer is a 18" x 6" fitness training roller designed for both indoor and outdoor use. Made of durable black plastic, this roller is ideal for full body muscle training and can be used for home, semi-commercial, or commercial purposes. The roller only set includes one unit, which is lightweight at 4 lb 1.7 oz, making it easy to transport and store. Perfect for gym and training activities, this roller from the trusted brand Indo Board is a versatile and effective balance trainer for achieving fitness goals.