These caps liners are mainly made of , which has high compression elasticity and good air permeability, so that you will not feel stuffy when wearing for a long time.The hat patch can fix the hat, making it safer and more reliable for customers to wear the hat, without worrying about the hat falling or floating . Features -Color:Assorted Color -Material: -Size:11.00X2.00X0.20cm/4.32X0.79X0.08in -Note:It can reduce the cap circumference between 1cm to 1.5cm. -This hat liner pad is very suitable for hats.Breathable and absorbent, so that your skin can , will not feel stuffy. -These Cap Liners can effectively solve this problem, allowing you to easily keep the caps stay on your head. -Simply peel the back adhesive, and then stick the liner stick inside the cap lining, very simple to use. -These caps liners are mainly made of , which has high compression elasticity and good air permeability, so that you will not feel stuffy when wearing for a long time. -The hat patch can fix the hat, making it safer and more reliable for customers to wear the hat, without worrying about the hat falling or floating . Package list: Sheets of Caps Liners