unshrinkable

Its "unshrinkable" underwear, developed in 1898, became popular with gold prospectors in the Yukon.

One 1920s advertisement called it a "guaranteed unshrinkable fine wool flannel" for women who wanted both "daintiness" and "protectiveness".

Plus, it was designed to repel water and block LTV light and is unshrinkable and machine washable.

The family owned a knitwear business, founded by his grandfather and famous for its unshrinkable long johns, which saddled him with the nickname Underwear Man when he entered politics.