Contoured bell-shape is easier to insert, resists tendency to back-out of ear canal. Polyurethane foam enhances comfort, especially for long-term wear. Smooth, soil-resistant closed-cell foam skin prevents dirt build-up.

Smooth, soil-resistant closed-cell foam skin prevents dirt build-up. Polyurethane foam enhances comfort for long term wear. Contoured bell shape is easier to insert, resist tendency to back-out of the ear canal. The world's most-used polyurethane foam ear plug. Sperian Max corded Ear Plugs - 100 Count.

Style: Corded. Recommended Uses For Product: Noise Reduction. Material: Foam, Polyurethane. Color: Orange/Blue. Brand: HOWARD LEIGHT. Best Sellers Rank: See Top 100 in Health & Household. : B004XN0Z1E. Manufacturer: Howard Leight by Honeywell. Date First Available: January 26, 2010. Item model number: RTSMAX30. Product Dimensions: 2.5 x 2.5 x 2.5 inches; 7.2 Ounces. Is Discontinued By Manufacturer: No.