Fishient Group Slinky Fibre (Super Hair Substitute)- Slinky Fibre is the perfect Super Hair substitute. Nice crimp to give body without the buildup. It is also a great substitute for any pattern tied with bucktail. It is very durable and will last longer than natural materials. Slinky fibre is water resistant and makes casting bigger flies a breeze. This is an essential part of any saltwater fly-tying kit. Perfect for toothy fish.