I bought the Tirra last year because they were the first to Teva that I liked. The other models with the reduced Riemchenlösung were not for me. The Tirra but offer a super grip, because they are "more" belts have. Outsole is padded - I could walk right at the first wearing for hours with it. The ankle strap is quite narrow true: is not a problem for narrow feet. When selecting the size I was facing the same problem: 37 or 38. I'm a typical 37.5-bearer and think that an increase of a half size would be a perfect fit for me too. Therefore, a star deduction. I have decided for the 37 that goes straight. I wear them in the summer also for paddling takes neoprene shoes: excellent.
