Heat transfer. 100% Cotton
You should probably hand wash whatever stain's you get on this to make sure it lasts. If you're too lazy to do that, just machine wash inside-out with low or warm temperatures. DO NOT BLEACH.
When drying, keep that shit inside out. Tumble dry low. If you wanna be extra careful, you can remove the garment while it's still damp and hang it on a hanger.
Good luck :)