The squirmy wormy is a fly pattern that originated in the USA and is based on a relatively new material consisting of an incredibly stretchy rubbery substance. There are many new variants using this incredible material. leech patterns to Booby flies and Blood Worm patterns exist today with this material.
The material is thick, weighty, available in a wide range of colours, and wiggles extremely enticingly. You’ll struggle to find a worm imitation anywhere near as lifelike or effective as the squirmy.
On the right day, it’s a really effective pattern and material to try.