I love these...love the classic Birks fit, without the high price tag and need for lengthy break in time. They are lightweight and very comfy. The anthracite is a great, neutral color. Super happy with them & wear them a lot (in rotation with my Olukai flip flops!). I do occasionally get the arch fart from the suction against my arch on my left foot, but it's rare and not a big deal. I could see how some individual's arches and this design could be a farty noise problem, though. YMMV.