Gotta love the comfort of Birkenstock's for casual summer outings. I grabbed these for my dad who usually wears a 45 in most brands that do European sizing, but for some reason they were massive on him. We sized him down to a 43 and they are working perfectly. For any Birkenstock's I would recommend getting the cork sealer to ensure they last longer and look better.

http://www.backcountry.com/birkenstock-cork-sealer

These sandals are the oiled leather with the soft footbed. The oiled leather stands up to everything and the soft footbed feels like a dream without sacrificing any durability. The only difference is a small piece of memory foam just below the suede on the footbed. I got the sandals about a week ago and have had them on every day since. I've used them for everything from boulder hopping and hiking to going on dates. Very impressive showing from Birkenstock. Look just as good as a pair of classic Arizonas but with the convenience of the heel strap so I don't have to hold them on myself. I set them where they fit and haven't had to undo them to put them on. They fit a little wide on my narrow feet but they work in a 43.0 (I usually am a 43.5 - 44.0 in most shoes).