Ultra Chenille Small and Micro Size is a standard material used for making San Juan Worms and for bodies. The micro size is ideal for bead head worms and also for making the palomino midge. Ultra chenille is denser than Rayon Chenille. About 15 feet per card. This has a stiff core and this allows you to make extended bodies and also use it for tails. You can burn the end with a lighter to taper the tip.