• 4-Stage, Ultra-Soft Polymer Design
• Antiallergic Washable Material
• Single Size, Suitable for Every Ear Structure
• Hygienic Operation with Internal Handle

These earplugs are designed to conform to EN352-2 standards, which means that they have been tested and certified to provide the highest level of protection against noise. They have an SNR (Single Number Rating) of 30DB, which means that they are able to reduce the overall noise level by 30 decibels.