Review on Visor Sweat Liner For Golf & Tennis Visor - Hat - Cap - NoSweat - Made In USA - Patented Sweat Absorbing Technology by Amrozi Papi

Seemed like a good idea at the time. When peeling off backing, it seemed like it had enough stick to stay in place, but did not. I was trying to attach to a leather strip inside my sun-hat.Note, these will slightly reduce the hat size since you are padding the inside liner. For my sun hat, that worked out great, for as long as they stayed in place (a day or 2).But bottom line - if they dont stay in place, they dont work.