... river, amusement park, pool, ect. It is more funny for kids & aldults. It is made by FRP (fiberglass reinforced plastic ... ) which is more suitable for water using. It is more durable, light weight, high strength, low distortion, anti-corrosion ... attractive appearance, small resistance and buoyancy, high drive efficiency.1:steady: anti-wave performance, stable operation of the still waves, ...