The best winging and post material ever, because it is hollow.
AERO DRY WING
This polypropylene wing material is hollow and lighter than water (specific gravity: 0.68), and it never absorbs water. This is an ideal winging material that is also useful for bodies.
AERO DRY WING FINE
This extremely fine-textured polypropylene is half the diameter of similar materials. With the same hollow construction as Aero Dry Wing, it is ideal for tiny dry fly wings. Makes great parachute posts as well.