Very soft, silk like material. I use these shirts for sublimation. I sublimate at 390 degrees for 40 seconds. They come out great. I use a Hotronix heat press. (I was looking for this type of info when I researched different brands of shirts, so I hope this helps.) I have only used this brand in white, so I’m not sure how the “color” shirts sublimate but have made multiple repeat purchases for this one. :). The sizing is a bit on the large side but a nice comfortable loose fit.