# "Secrete" or Skull Cap (Hat Lining)

- Date: c. 1630–50
- Medium: steel
- Classification: Arms and Armor
- Dimensions: Overall: 20.3 x 16.5 x 10.2 cm (8 x 6 1/2 x 4 in.)
- Culture: England (?), 17th century
- Credit line: Gift of Mr. and Mrs. John L. Severance
- Museum: [Cleveland Museum of Art](https://clevelandart.org/art/1916.1895)
- Rights: [Public domain (CC0)](https://creativecommons.org/publicdomain/zero/1.0/)
- Picture: https://openaccess-cdn.clevelandart.org/1916.1895/1916.1895_web.jpg
- Who can see it: Teens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

Metal skullcaps, for wear under a hat, allowed the owner invisible protection against edged weapons. They were worn by both soldiers and civilians.