Hop on! At home or on the go, this innovative trainer helps perfect balance and coordination for the waves, slopes, or skateboard park. The curve, size and unique patented shape work on all surfaces, indoors or out, for up to 500 lb. 28" long, perfect for riders over 4' tall, and practically indestructible. Made in the USA. For ages 5 yrs-adult, from Spooner Boards.