The ear defenders contain double shell and 2 layers of foam cushion, which enables it to dampen the noise effectively with its good tightness. And it is lightweight, adjustable and easy to wear. This ear muffs will provide essential hearing protection for industrial areas, construction sites, airports and other high risk workplaces. And it can also be used when sleeping or studying to help promote life and relieve stress. Introductions for use: 1. Pull the cups outward and position the hearing protector over your ears so that the cushions fully enclose the ears and seal tightly against the head. 2.Adjust the height of each cup on both sides while holding the headband down until you have a tight and comfortable fit. 3.The head band should sit straight on the head. Care and cleaning introductions: Clean the outside of the ear muff regularly with soap and lukewarm water. Do not immerse in water. Do not store the ear muff in temperatures above 130℉(55℃), for example behind a windshield or window. Earmuffs must be regularly inspected for cracked or worn parts and replaced as needed. Typical life for foam cushions is 6 months. This product contains metallic components that may increase electricity hazards. Also, please refer to CSA-standard Z94.1 on industrial protective head wear. Note: if these recommendation are not followed, both attenuation and function maybe impaired. Products Specification: Material: ABS, nylon, stainless steel Color: Black, yellow, red Dimension: Fold: 16 x 14 x 8cm (6.30 x 5.51x 3.15" ); Unfold: 19 x 14 x 8cm(7.48 x 5.51 x 3.15") Maximum stretching inside diameter:15cm (5.91") Weight: 0.36kg Gift: A pair of ear plugs (NRR: 32dB, Yellow); a velvet pouch Box contains: A pair of ear defender A pair of ear plugs (gift) A velvet pouch
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