The yarns Gary LaFontaine used for his famous “Sparkle Pupa” and “Floating Pupa” are no longer produced, and nothing else is quite the same for tying these highly effective patterns. Most of the materials marketed as Antron are not what they claim to be and do not reproduce the effect that Lafontaine wrote about in his monumental “Caddisflies”. I do have a very limited amount of this authentic material in some of the most important caddis colors. Some of these are my own color formulations dyed to closely match specific caddis species. 3 yards per pack which will tie a lot of Sparkle Pupa.