Not only are these shirts made of soft stretchy fabrics but the service ONNO gives is great. I have ordered 6 shirts & all arrived within a few days. My first 3 shirts were all Bamboo & size small. I washed in cold water & line dried to maintain the fit. Perfect! My next 3 were ONNO cell Bamboo & Hemp. I ordered these in Medium & I washed in cold water also line dried. Again....they maintained their feel & shape without shrinking. These were a little more than some tshirts cost but so worth it.....really! I love the colors, feel, & general cut of this shirt. It looks great on. For perspective, I am 5’6” & weigh 125#. Both small & medium worked fine.