Where did this as the beginning of any post when I normally do not do extreme sports, or I do but in a different way.
Class 2: Some rapids or stone, but still no dangerous rafting.
Class 3 rapids, small waves, smaller waterfalls, but no significant danger. Tourist rafting usually falls into this class.
Class 4: rapids, bigger waves, rocks, waterfalls or higher downs, required concentration and higher speed response. Only for experienced rafters.
Class 5: rapids, big waves, rocks, dangerous cliffs, huge waterfalls and downs, need extremely precise and concentrated management. The final class rafting competition.
Class 6: rapids, huge waves, large and extremely dangerous rocks and reefs, numerous traps and downs, required master management raft without an error. This class is extremely life threatening and often ends rafters accidents.
Colour: Various colours inter-mixed or otherwise incorporated
Texture: Frosting, satinizing, glue-chip, overshot and sandblasting
Surfaces: Overlays, cameo, cut-back, cutting and engraving