I use Bella Canvas brand which is 48% polyester and 52% cotton. These are unisex sizing. They do run true to size and are super soft! These shirts are perfect for any type of transfer including sublimation. I bleach all shirts myself in house so no two shirts are the same. I bleach a square on the front of the shirts with splatter spray. I do not typically bleach the back of the shirts unless requested. If the shirt scorches after you press the transfer on the shirt spray the shirt with peroxide and place in the sun or dryer and this will remove the yellowish/brown mark.