Page "Pajamas" Paragraph 26

According to Encyclopaedia Britannica, " They were introduced in England as lounging attire in the 17th century but soon went out of fashion.

About 1870 they reappeared in the Western world as sleeping attire for men, after returning British colonials brought ( them ) back ...." As sleeping attire, they adapted the pajama pant to come without pockets, since pockets are only necessary for daywear.