Plugs are often used in dirty working environments making it likely that particles will collect on the surface of the material, causing minor injuries and irritation. The smooth, dirt-repellent surface of the SMF-30 can be cleaned using soap and water, maintaining the wearer's comfort and safety.

• Pre-formed plug shape with no rolling required makes insertion simple
• Self-sealing fflanges give all day comfort
• Rigid stem makes insertion easy and reduces the risk of contamination
• Non-resonating textile cord for comfort and easy storage
• Cord can be detached for added safety when working around machines, or when the TPR plug is to be cleaned using soap and water
• Can be reused several times, making them very cost efficient
• Moderate attenuation allows for safe usage that blocks out hazardous noise yet allows warning signals and voices to be clearly understood