Features: -Individually wrapped -Smooth, dirt resistant surface for hygiene -Comfortable for a wide range of earcanal sizes -Can be combined with ear muffs for additional protection -Hypo-allergenic material and Bright orange color for visibility -Recommended for high noise situations (up to 100dBA TWA). -Noise reduction rating: 32 dB. Description: Plugs are made of soft foam that expands to fit virtually any size ear canal. Comfortable to wear for extended periods. Each pair is individually packaged in a plastic bag. Package included: 200 Pairs Disposable Foam Ear Plugs How to use? 1. Use your finger to rub the earplug into a thin strip. 2. Pull the pinna up to enlarge the opening of the ear canal with one hand. 3. Insert the rubbed earplug into the ear canal until it is flush with the tragus,then press the bottom of the earplug slightly to fix it until it fully expand(around 20 seconds). 4. After wearing a pair of ear plugs, check if there is too much volume difference while you cover your ears with your hands. If there is, wear them again.