Some sprang info.

This blog has lots of historic and and traditional clothing pictures.

sometimes known as Folk Costume
 

Kykai, netted or sprang caps of Lithuania and crocheted descendants 

Caps, sprang frame, technique
http://folkcostume.blogspot.com/2011/08/kykai-netted-caps-of-lithuania-and.html

 

Have a good day!

Franco Rios