The tan one has venting on back, a zipper and velcro front pocket.  Inner mesh lining at neck and pockets.   Please note that this one does have a small hole on underside of collar, but does not go though and cannot be seen when worn normally.

Blue one has a zipper and velcro chest pocket and mesh lining at neck.

Both measure approx armpit to armpit of 23"-24".  Length approx 31"