Hat with Adjustable Size

Abstract

A hat with adjustable size includes at least one expansion strip 4. Several hat pieces 1 and the expansion strip 4 are sewed to form a crown 5. The expansion strip 4 is sewed at a seam of the hat pieces. The expansion strip 4 is made of a stretchable fabric. A sweatband 3 is sewed along a lower inner periphery of the crown 5. The sweatband 3 is made of a stretchable fabric.

What is claimed is: 
     
         1 . A hat with adjustable size, comprising at least one expansion strip ( 4 ) and a plurality of hat pieces ( 1 ), which are sewed to form a crown ( 5 ), and the expansion strip ( 4 ) is sewed at a seam of the hat pieces. 
     
     
         2 . The hat with adjustable size according to  claim 1 , wherein the at least one expansion strip ( 4 ) is made of a stretchable fabric. 
     
     
         3 . The hat with adjustable size according to  claim 1 , wherein a sweatband ( 3 ) is sewed along a lower inner periphery of the crown ( 5 ), and the sweatband ( 3 ) is made of a stretchable fabric. 
     
     
         4 . The hat with adjustable size according to  claim 1 , wherein a sweatband ( 3 ) is sewed along a lower inner periphery of the crown ( 5 ), and the sweatband ( 3 ) is cut off at the seam of the hat pieces sewed with the expansion strip ( 4 ).