POLY II is a fine, medium-long nylon poly pressed into sheet form. Each sheet measures 4 x 5, and can be pulled apart with thumb and forefinger to provide no-waste, no-mess dubbing as you need it. Easy to use, easy to store, and there's an amazing amount of material in each sheet - enough to tie 250 size 16 fly bodies! The Material dubs beautifully - many prefer it to loose poly.
Wing Material too!
POLY 2 sheets may be used to make wings also - cut to shape with scissors instead of pulling apart.