These decals are 20-mil thick and 4.75" diameter round cut helmet stickers that are used on helmets in sports like football and lacrosse
They are a flexible vinyl decal that will fit nicely to the surface that you are sticking them to without buckling
The 20-mil thickness provides an extremely durable sticker that is designed to sustain the impact of another helmet in these contact sports.
The adhesive sticks tight without becoming gooey, and can be easily removed if needed.