The material of this 1/2 zip shirt is very soft and much nicer than expected. Often, it seems these types of products can be a little on the rigid side, but that is not the case with this one. It also has a breathable mesh back which was unexpected, but not a bad surprise at all. It is a close mesh, so is really only noticeable when not on the body and being held up to light. My husband is 5'11" and 170 pounds and the large fits nicely.