These are my sleep shirts, I wanted these to work out in and they are okay for that too. Just not flattering on me to go out in. I sort of look like a boxy coach. Lol.  they are SUPER comfortable, light, cool and airy. I find that they are thinner then other brands of cool dry and less stretch.. They remind me of the silk or polyester PJs and so they are quite comfortable, more comfortable then other workout shirts I own and I have several. Just super light. I ordered the 3x and I'm glad because the 2X would have fit everywhere besides the bust. The 3x is a little large but not in the chest area. The 2x would have squeezed my chest. I'm 5'6 195 and a 42 DD bra size. I'm normally an XL or 2X in Amazon tops so feel like you need to go one size up for this one. I've been using my Under Armour and Danskin cool shirts to workout and go shopping in. They are more flattering for big gals. But these are the best sleep shirts ever. I need more to sleep and lounge in..