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GRILAMID LFT® SHELL Carbon Grilamid LFT® is a polyamide loaded with long carbon fibers that improve the stretch resistance properties and stiffness of Grilamid®, without increasing its weight. This allows to reduce the thickness of the hull walls, thus obtaining a light product, with contained volumes, but at the same time very performing. Resistance to shocks and stresses also improve, allowing you to keep the performance of the boots intact over time. ALIEN CUFF Cuff in Grilamid FG LFT®. This material is reinforced with long glass fiber. This material has higher strength and stiffness values with the same percentage compared to a short fiber, suitable for light applications. Long fiber construction offers 20% to 30% higher stiffness. All long fiber reinforced polyamides have h.