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These kayaks are built combining kevlar with other fibers and materials in order to obtain certain properties which are not possible to obtain in the original materials. These compounds can be selected to obtain special combinations of rigidity, resistance, weight and appearance.
The Kevlar, or poliparafenileno tereftalamid, is a polyamide. Its lightness and exceptional resistance to breakage is why it is used in sailing boats, bullet-proof vests and in the aeronautical industry.
Kevler has high levels of rigidity, hardness, durability, resistance to traction, chemical resistance, resistance to scrapes and a low thermal contraction, ideal for a kayak!
Carbon fiber is a synthetic fiber mostly comprising of carbon. Each fiber is the union of thousands of carbon filaments. It has mechanical properties similar to steel but it is as light as wood or plastic. Due to its hardness, it resists impacts better than steel.
It has a low density but a high level of resistance to changes in temperature, and also resists external agent variations and mechanical changes.