Polypropylene yarn absorbs floatant and water but will sit in the surface film. Ideal for dry fly wings, posts (Parachute or Klinkhamer patterns), shucks, and bodies.
Semperfli Polyyarns for Fly Tying
Fishing ArticlesRossett & Gresford Flyfishers Club
Poly Yarn for Fly Tying or Tying Flies (White) : : Sports & Outdoors
SemperFli Poly Yarn — Moonlit Fly Fishing
White Poly Yarn for Fly Tying –
SemperFli Poly Yarn — Moonlit Fly Fishing
Siliconised Poly' Yarn - PRO PACK - Fly Tying Boutique
Semperfli Dry Fly Polyyarn - Competitive Angler
Semperfli Polyyarns for Fly Tying