Review title is Coolest. Thinnest. Most Stretchable! [SEP] These are the most stretchable & comfortable. My head size is larger & my hair thick, so these are almost the best. They are also thinner & cooler.<br />However,  the fabric color looks much lighter when stretched & the buttons are a little smaller than I prefer. But what I took 1 star off for was the fact that the buttons are too far back on the band, which makes the mask way too tight on my face. Also, if you have a small, petite head with flat hair, you might find that these do not stay in place like 1 reviewer stated.<br />I have many 1 inch bright colored buttons which I have sewn on other headbands,  so I will try to sew some about 2 inches forward on these. The problem with the thicker cotton ones are that they are too small, tight, uncomfortable & do not stretch as much, feeling like your head is in a vice. Not this one.