The Betula Boogie I use now already for a year almost every day and I am absolutely satisfied with the quality! After the bridge was unfortunately something forward expired in my old Birkenstock, I opted for the cheaper option of Betula and I can not detect any differences in quality. The shoes fit perfectly in the right size. In sneakers I usually wear size 46, but here size 45 / 290cm. The footbed is ergonomically designed and very comfortable. The right size is that at which do not border the toes on the web! Even with the front Betulas must remain a small clearance, in the toes can slip in rolling motion. Just when you the Betula buys too small, they go much faster "broken" because it constantly pushes against the web. So far, I could hardly detect signs of wear. Sole is still plentiful and the straps are still all intact. I can therefore recommend the pines with a clear conscience :-)