The updated Sirkos Evo GTX LO uses LOWA's proprietary PU in its midsole to provide miles of excellent, lightweight comfort. The redesigned lining of the fabric and suede upper improves the strength and fit of the shoe and ensures a perfect fit for your foot. With the LOWA Monowrap frame, the midsole of the Sirkos Evo GTX LO provides three-dimensional support for your foot by comfortably weighing and supporting it on every step on a variety of uneven surfaces. A LOWA Cross III sole unit allows good traction in changing terrain and saves energy so you can continue for longer. And, of course, the waterproof Gore-Tex lining provides optimal comfort in different conditions