I've bought two pairs of the Combia Techsun 2. After 3 months of light wear, usually only getting them wet while entering my boat, the front half of the sole came off both the right and the left. Since I've always thought Columbia makes a quality products, I decided I had gotten a bad pair and replaced them with same. Now, after another 3 months of light wear, the front half of the sole came unglued on the left side. Both pairs looked like they had hardly been broken in....I'm very disappointed with Columbia, I'll be looking for a different brand of shoe.