Cotton stretch knit (95% cotton, 5% lycra).  Provides full coverage under any hat.  A necessity if you want to wear a silky scarf (the liner gives it something to hang onto). Great for chemo patients.   Black is a must have color - add it to your list of essentials!

Many women wear these to bed as night caps.
 

SIZE:  All my hats are designed to fit heads that measure 21 - 22 inches in circumference. If your head is larger or smaller, no problem....since I sew my hats, I'm glad to make yours to fit you. Just be sure to include your head measurement when you place an order.