The articulated frame is hand operated via draw strings. These draw strings are fitted with swivel hooks so that when clipped into place the wings can be held fully open, hands-free.
Some of my other wings have been longer when fully closed. I redesigned the frame for this pair so that the wing tips would be further off the ground when the wings are folded. Greater length makes it very difficult to go down stairs. (In my Angel of Death costume I had to walk down stairs backwards.)
Overall I am very well pleased with this design. There are many improvements over the last pair of wings I made. I would be happy to make this model of wings again and would probably make very few alterations to this design.