Have tried numerous boots over the years. Best ones by far are Lowa Mountain gtx, they are comfortable, waterproof, resoleable. You can get them online for around £120.00. As for sizes they are like for like you shoe size. Ie size 10 shoe then size ten boots. I personally use these regularly both for walk , yomping and work at night stood on the doors in Sheffield and also on day job. Well worth the money, if this pair ever do die I will be buying another pair.