Attributes . These are economical, convenient disposable single-use earplugs, ideal for situations in which a high degree of comfort is needed or when reuse may present a hygiene issue. They are made from self-adjusting polyurethane foam which expands to fit nearly every wearer. Their contoured T-shape makes these earplugs easy to insert and wear and their smooth, soil-resistant closed cell-foam skin prevents dirt buildup. The vibrant magenta and yellow coloring makes these earplugs highly visible, enabling easy compliance sighting. 200 pairs per case. . Names