The 3M Peltor Optime 101 - Behind The Head Earmuff, H7B is a specialized hearing protection device designed for use in noisy environments such as industrial settings, construction sites, and other loud work environments. The earmuff features a behind-the-head design that provides a secure and comfortable fit, allowing the user to wear the earmuff for extended periods without discomfort. The earmuff is also designed to provide effective noise reduction, with a noise reduction rating (NRR) of 26 decibels, making it suitable for use in high-noise environments. The earmuff is made from high-quality materials and features a durable construction that can withstand the rigors of daily use. The 3M Peltor Optime 101 - Behind The Head Earmuff, H7B is a popular choice among workers in loud environments who need reliable and effective hearing protection. Overall, the earmuff is a must-have tool for anyone who works in a high-noise environment and wants to protect their hearing and prevent noise-induced hearing loss.