3m Ear Muff 1426 depends on the worker's requirements. The majority of the time, this muff will do the trick, although they might be uncomfortable in hotter climates. This provides the best defence against loud noise because they slip right into the ear canal. To keep your ears toasty without hurting, the best inter muff should fit snugly. It can help you keep your body warm outside. This is a necessary winter accessory. This totally encloses the outer ear, blocking out sound.