I friend of mine has a pair of these and has covered many miles in them without issue. So, as my Muck Boots lasted just 4 months before the soles wore smooth, I ordered a pair of these from another internet based company in Berkshire.
My friend advised me to order a half size up for comfort - he was right. The boots are very comfortable and appear well made. I put these on and took a 5 mile walk and they were just as comfortable as when I set-off.