Features: -Equipped with 2 layers of professional sound-absorbing foam, high-density rigid shell and the unique double shell, the earmuffs offer 34dB SNR (noise reduction rating) for noise cancellation. -The shell is made of ABS material, which is anti-fall and wear-resistant, and has a long service life. -Adjustable headband to achieve full vertical adjustment for a perfect fit. The extendable stainless steel at the end of the headband offers flexible adjustment. -Included travel drawstring bag for easy packing or neat storage, dust-free. -Ideal for shooting, hunting, sporting events, concerts, festivals, learning and operating machines to protect hearing, especially suitable for construction and landscaping work. .