Mack's earplugs are designed for swimming, offering water resistance and 22 decibels of noise reduction. One was too big for my ear, so I used it cut in half. Stored at home. Please refrain from purchasing if you are concerned about minor imperfections. - Brand: Mack's - Noise Reduction: 22 decibels - Water Resistance: Water resistant - Application: Swimming earplugs - Warning: Caution for use by children - Made in: USA