Feature soft, slow-recovery foam for comfort and noise reduction. Easy to roll down and insert, and expand slowly for a low-pressure fit in virtually any size ear canal. Bell-shaped with flange for a more consistent fit. Individually packaged in polybags to keep each pair clean. Tested to ANSI S3.19. Uncorded: Made in USA. Corded: Earplugs Made in USA, assembled in Mexico.