3M PELTOR Optime I Noise Cancelling Ear MuffsThe heavy machinery used in industries such as agriculture and construction can cause serious damage to your hearing without effective protection. The 3M PELTOR Optime I Noise Cancelling Ear Muffs will shield your ears from noises up to 27db, and has been designed for maximum comfort and minimum moisture build-up.Key Information EN 352 - 1 SNR (Simplified Noise Reduction): 27dB One universal size Price is per pair of ear muffsWhat Are the Key Features of the Noise Cancelling Ear Muffs? Protection: Shields your ears in loud working environments Wearable: Large space inside the cups reduce moisture and heat build-up Comfortable: Soft, wide cushions to reduce pressure around the ears Unobtrusive: Unique low profile headband and slim line cup design minimises obtrusiveness Hygienic: Easy to replace cushions and inserts to keep the ear muffs cleanWhat Are the Safety Specifications of the 3M PELTOR Optime I Noise Cancelling Ear Muffs?The 3M PELTOR Optime I Noise Cancelling Ear Muffs have been tested in accordance with a number of specifications to ensure your safety. The standards that the ear muffs meet include:EN 352 - 1The 3M Ear Muffs meet EN 352 - 1 for ear protection. This means that they are suitable as ear defenders in loud conditions.SNR (Simplified Noise Reduction)The Ear Defenders achieve an SNR score of 27dB. Further ratings are as follows: High frequency = 32dB Medium frequency = 25dB Low frequency = 15dBWhat Are the Uses of the 3M PELTOR Optime I Noise Cancelling Ear Muffs?The noise cancelling ear muffs are ideal for use around heavy machinery, which might otherwise damage your ears. Following are some suitable applications: Agriculture Automotive Manufacturing Construction Light engineering Metal processing WoodworkingHow Comfortable Are the 3M PELTOR Optime I Noise Cancelling Ear Muffs?The lightweight, low-profile design of the ear muffs minimises obstructiveness, and the large soft cushions will reduce pressure on the ears and head. The inside of the cups is large, which helps to minimise an uncomfortable build-up of moisture and heat.What Is Signal to Noise Ratio (SNR) and Noise Attenuation?The SNR ratio of ear-protection indicates the amount by which background noise will be reduced, or attenuated. So if you work around machinery with a background noise of 100dB, then ear muffs with an SNR of 32 will reduce the background noise to 68dB, protecting your ears. Ear muffs will reduce the overall background noise by differing amounts depending on whether the noise is medium, low or high frequency.Sizing of the 3M PELTOR Optime I Noise Cancelling Ear MuffsThe 3M Ear Muffs are available in one size that should suit most users.Additional Documentation 3M PELTOR Optime I Noise Cancelling Ear Muffs