Check the listing for details. MSA Comfo Cap Lace in liner (hat liner ONLY). Condition: New. Listed at 29.00 USD. MSA LACE IN HARD HAT LINER Hand-Made, all Leather lace in hat liners for low vein Mining Hats. Fits like a baseball hat - been told by many customers that my liners are the most comfortable liners around and line up perfectly! Band and tabs are made of 100% leather. Straps are made of quality nylon. Strings are adjustable to make a tighter or looser fit. 2 1/2 inch adjustable velcro Liner comes with 2mm string to tie the top together and bottom to lace the liner into the hat. Request size in messages to seller at checkout -- sm, med, lg, xl.How to get the size you need: measure around your head and that is the size you will need.Example: your head measures 25" around (where your hat will sit on your head) you would need an X-large hat liner. The sizes are: Small--22 1/2" Medium--24" Large--24 1/4" X-Large 25 1/2" Request size in the Message to seller at check out. Each has a 2 1/2 in. adjustable Velcro strip in the back that will tighten or loosen either way. I have been making and selling these liners for over 8 years and no one has had any problems with the workmanship of the liners. If for some reason liner does not fit I can issue refund or an exchange if the liner is unused.