Hyper GTXThe Gore tex lining guarantees a lightweight, waterproof and breathable boot, thanks also to the mesh uppers. The precise, ergonomic fit is achieved by using the all around pullstrings which hug the 360 clinking to the lacing system via a series of hoops and high frequency reinforcements. This construction method derives from the know how gained by La Sportiva in the climbing scenario. The protective rubber toe cap also derives from the climbing shoe.