These bouffant caps are gamma irradiated to ensure low bioburden in your critical environments. They are made from comfortable and breathable white spunbound polypropylene with a non-irritating, latex-free comfort band that stretches out to size. They have a 14 gram weight that provides superior strength over many of the other bouffant caps in the marketplace. They are clean packaged into 100 caps per bag flat packed for easy dispensing, with 10 of these bags per case.