Wool is treated using a small amount of Chlorine followed by the application of a resin which encapsulates the scale structure of each wool fibre, thus eliminating any propensity for felting shrinkage. The machine washable finish is permanent and cannotbe removed by either mechanical or chemical means.

In addition to rendering the wool free from any potential for felting the machine washable treatment also enhances both softness and brightness of the wool fibre.

Machine Washable (Superwash) treated wool is used to make machine washable knitted products which meet Woolmark Standards for Machine washable (Test Method 31) or Total Easy Care (Test Method 31/254).

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