I love these boots. I wore these on a seven-day trip to the Kilimanjaro summit after a handful of day hikes. They've been worn on rocky and slippery surfaces. They have never given me any problems at all. I normally wear a US size 8 and bought the size 40. And they are light and comfortable enough to wear around town without feeling like bricks are on your feet. After doing a lot of research on boots, I am very happy I got these. These are well worth the money and highly recommended.