La Sportiva Spire GORE-TEX are the new generation low cut shoe for fast hiking. This shoe uses solutions that are part of La Sportiva's DNA, combining technologies and concepts that derive from Mountain Running and Mountain for a versatile, waterproof and super breathable product thanks to the use of the new Gore Rex Surround technology. They have a Nano-Cells 2.0 structure on the outside, super breathable cells that work in synergy with the GORE-TEX membrane for unprecedented breathability. It also incorporates the Stability Control System (SBT): an integrated anti-torsion stabilization system that integrates the ventilation holes of Gore technology. The Vibram XS Trek outsole provides excellent grip on hard, soft and muddy terrain. Technologies: - GORE-TEX Membrane The GORE-TEX membrane includes 1.4 million microscopic pores per centimetre squared. These pores are 20,000 times smaller than a drop of water, but 700 times larger than a water vapour molecule, which means the membrane is fully waterproof whilst also offering maximum breathability. - Vibram Ensures excellent durability, great grip and stability at the toe.