First thought it was a hang glider when I saw it coming from an apparent turn into a level flight. This is when I got better view of it and it appeared somewhat transparent from below with some black and green like edges. I saw this when it was still had its wigs tilted in the turn. I saw some kind of design to it other than its' shape on the bottom of it. It was traveling slow at first, then slowly speeded up until it disappeared from sight as it flew south / south eastward direction.