Their high NRR 31 noise blocking makes them ideal for sleeping

please see the user instruction

Perfect for reducing stress from: Sensitive hearing

Can be worn throughout the day when working

with 20dB of protection from unwanted sounds

Howard Leight VeriShield VS130N Neckband Earmuffs (SLC80 31dB, Class 5) 23dB Their high NRR 31 noiseKey Features 1) Large dimension range: Comfortably fits a wide range of head sizes. 17% more adjustable than earlier versions. 2) Wide cup opening: Ideal for workers with larger ears, or who wear hearing aids. Opening area of the cup increased by 16% over earlier versions. 3) Memory foam ear cushions: New unique memory foam that combines denser and softer foam than previous models, for greater comfort and attenuation. Reduces squeezing pressure on the