So … when I first discovered Simply Merino, I had asked if they would ever make thongs, because the others I had found previously just didn’t quite live up to expectations. Let me tell you how excited I was when these finally came out! AND when there was a pop up just down the road from me in Vic, where I would get the opportunity to try these on! Well, they were out of my regular size M when I got there, so I tried the S overtop of my leggings and they are a perfect fit! So don’t be afraid to size down a bit. They don’t stretch out like others I have purchased. And they are so comfy and wonderful! Enjoy!