new MSA H1 Helmet Mounted Hearing Protection Ear Muff NRR27

I have four sets of these, all unused and in their original packaging. They came to me as government surplus. Retail value in Canada is in excess of $40 per pair. Receipts are available with purchase. According to the manufacturer: For industrial workers, the V-Gard Cap-Mounted Hearing Protection Line delivers enhanced comfort and top-of-the-line performance with upgrades in fit and style—all without compromising the quality expected from the legendary V-Gard brand. Designed to work with MSA’s industry-leading hard hats and accessories, the new earmuff line offers enhanced comfort while providing the performance level and protection needed to get the job done. Superior Performance Offers the highest attenuation for a cap-mounted earmuff on the market. Custom MSA sealing rings allow for optimal NRR performance. Works with MSA H1 Helmets Works with existing MSA visors and frames for seamless integration into your safety program.