[Макар]

Полный текст для того чтобы понимать почему так.
Я думаю точно не в целях экономии.

A slalom board needs to be lightweight for early planing, acceleration, top speed and reactiveness, but it also needs to be controllable at top speed in choppy waters and flex for smooth gybes. On the deck we use a full layer of Biax-Carbon, which reduces the twist but still maintains the flex required. A full Carbon board is very stiff and often in rough conditions the bottom of the board will impact hard on the water, which results in the user experiencing a very nervous-like feeling. Concaves on the bottom can make the board feel softer, but this alone is not enough in overpowered conditions. Concaves in combination with a softer bottom construction help to absorb upcoming chop and provide more control. Wood contains the right characteristics, but would be too heavy and lacks durability. To guarantee a long lasting product, and still have the soft bottom, we decided to use PVC in combination with Glass 90°-90°. To maintain our uniform graphic identity, the glass on the bottom is laminated with black resin. The finishing is white coated and sanded back by around 75%.