SilverGrey's Nutria Mask is versatile skin for multitude of fly patterns. The length and color of the hair varies in the skin making it useful for insect imitations, shrimp flies and salmon flies. Shorter hair can be dubbed with underwool for creating natural looking bodies. Hair can be also used as antennae and tails. Longer hair is suitable for shrimp flies' and salmon flies' tails. The hair structure is straight and vigorous.

Some size and color variation may occur in skins. Usually skin size is approximately 10 x 20 cm. Hair length varies between 1 - 4 cm.