The basics Protect against button degradation during laundering, dry-cleaning or hot ironing. The benefits These protectors are detachable, reusable, heat resistant, and flexible. The uses Degradation is prevented by sealing the button in hook & loop to minimize friction and penetration of cleaning fluids. The bottom line White - Small fits buttons up to 3/4" in diameter. Black - Large fits buttons up to 1 1/8" in diameter.