Wapsi Polypropylene Yarn
Very popular for dry fly and spinner wings and tails as well as buoyant fluffy parachute posts.
This polypropylene is heavier denier than European yarn. It is the stuff the North American market uses on their patterns that have been around for decades and is what is needed for spent wings etc. as the thicker & crinkle fibres provide more floatability.
Approx. 15ft per packet.
Can also be used as substitute Dapping Floss if your stuck