Cycling sunglasses by Bertoni respond to all the demands of professional and non. For who does bike races, in fact, needs a pair of technical sunglasses which are extremely light, comfortable and able to protect the eyes from the air, dust and the effects of the reflections of the sun rays. Plus, the Bertoni eyewear for cycling, guarantee the maximum safety, thanks to the materials resistant to impacts and atmospheric agents. The variety of frames, make them ideal for cycling, mountain bike or bmx amateurs or professionals. A new line of sunglasses called MTB with a special hyper ventilation is available now. The range includes sunsensor photochromic, antireflection, antifog and polarized lenses for all visual conditions. Most part of our frames are made in anticrash PC or TR90. The newest material used for the realization of our sports frames is the Nylon TR90LX, stress-resistant and impact-resistant, extremely light. These characteristics are due to the chemical composition of this material unique in its kind, 70% Nylon 30% Carbon. It is 20% lighter than conventional nylons and offers greater resistance to shock and traction. It offers a greater resistance to high temperatures without deformation and, in addition, has a shape memory, which means it can be folded, but will always return to its original shape. Due to its flexibility and strength the TR90LX is the safest material for sportive use in optical, in fact, the resistance of the head frame of accidental collisions has demonstrated a strong structural integrity. This special material also ensures an exponential increase of the frame duration in the time.