The M&M Nymph Is short for "My Moose Nymph". It was tied originally for the Yellow Breeches on mid-winter trips. I've held this pattern close-to-the-vest for a number of years, and its been a trip saver more often than not. Fished on an indicator and deep, this pattern does extremely well. I do fairly well with it throughout the year as a caddis larva also, but it truly shines in the winter.