There were two normal material kinds was used to make riverboard modern, that is foam rubber and the mixture plastic kept bent. That often was developed was the plank of the foam, because more kept the collision. The plank of hollow plastic is generally used in rivers that not many stones or more in. His weight was minor, around 7 kg. Could be made with the form that aerodynamic, so as often was used for the speed race and slalom. Whereas the plank of weight foam rubber between 7-15 kg. There were special forms racing, free style, boogie, rescue.
There were two normal material kinds was used to make riverboard modern, that is foam rubber and the mixture plastic kept bent. That often was developed was the plank of the foam, because more kept the collision. The plank of hollow plastic is generally used in rivers that not many stones or more in. His weight was minor, around 7 kg. Could be made with the form that aerodynamic, so as often was used for the speed race and slalom. Whereas the plank of weight foam rubber between 7-15 kg. There were special forms racing, free style, boogie, rescue.
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