Shane Stalcup's Micro Tubing is thin and flexible hollow rubber tubing. Micro Tubing is good as a body material in small insect imitations and you can use it as a ribbing also. Micro Tubing is good material for nymphs and because the tubing is thin, it is good for emergents also.
Length about 75 cm. Width about 0,3 - 0,4 mm.