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 coolerhowever the fabric color looks much lighter when stretched the buttons are a little smaller than i prefer but what i took 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 reviewer statedi have many inch bright colored buttons which i have sewn on other headbands so i will try to sew some about 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