Elastic and flexible body or ribbing material. Makes for great tapered bodies as the material stretches to a great extent but yet flexes back to its original length if needed. Much stretchier than D-Rib or V-Rib or midge tubing.
Fly Tying Tutorial: Flexo Midge: Easy Killer Midge Pattern
Essential Midge Patterns for Fly Fishing
Fly Fish Food
Stretch Round Rib - transparent, highly stretchable round rubber material. Perfect for ribbing segmented bodies: nymphs, saltwater flies
Stretch Round Rib - FrostyFly
Slim Rib Ninja Midge 4K
Midges – Fly Fish Food
Midge Emerger Fripple - Fly Tying Tutorial by Curtis Fry
Czech Nymph - Gwent Angling Society
Midges – Fly Fish Food
Super Stretch Midge Larva – Fly Fish Food