The good: Even though they arent rubber, they are thick and foam all the way around so I dont imagine them getting holes in the sides or bottoms, at least not very easily. Such beautiful shoes but these are the first pair of sketchers that dont mold to my feet. This is after just 3 Months of use. They fit and feel great and I weather treated them on the weekend and they are ready to roll. Sound, design, volume, Im glad I saw the review from 2RCPRODUCTIONS on YouTube to help my decision! A little big for my fifteen month old twins, but still wearable. Easy to adjust to hold your particular bike frame. I will say, they require some time to wear in. Had a small scratch on inside of arm I would say they would be a must have for your shoe collection!