... 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 ... no pollution to the environment.8: long life: import UV resistance, high density, corrosion-resistant polyethylene material, resistant to impact, ...