I am 53 years old and have chronic spinal disc damage in my low back, as well as bursitis in both hips, so supportive shoes are a must for me. I have literally lived in Dansko Professional clogs for more than two years now because they are the only shoes that consistently provide the lumbar support I need. Having said this, I love thong sandals and have been sorely missing them as a summer wardrobe staple; instead, I've simply worn my Dansko clogs without socks for the past two summers. I was so thrilled to find these thong sandals by Dansko here on Amazon, and took the chance of buying a pair. I wear a size 11M and buy EURO 41 in Danskos. They are incredibly comfortable right out of the box, and have the same great arch support that I've come to rely upon as the clogs do. The fit is good; although they are none too long, my heels and toes don't hang off the ends and the arch falls in the right location. I also bought two pairs of Dansko Alecia thong sandals, and while they offer good arch support and a more aggressive outsole and tread, the uppers are stiff man - made faux leather. These are made of actual leather, which is soft and supple, and should last for years with proper care. I am over the moon that I now have well - made thong sandals with excellent support to wear this summer!7/20/2020 UPDATE: Despite being supportive and adjustable (Velcro tabs for tightening or loosening upper) I am unable to wear these at all. After three hours of wear, my back was seriously killing me, and the pain continued for days. My return window has long since passed, so I will be donating these.