3M TEKK Protection Low-profile Earmuff, used to help protect ears against noises at or exceeding 85 decibels, folds for easy storage. Low-profile cups increase side visibility and liquid foam cushions offer all day comfort. 3M TEKK Protection Low-profile Earmuff offers a Noise Reduction Rating (NRR) of 21 decibels making it a great choice in hearing protection for both the professional and DIYer.