PlugsSafety PlugsPockets with PermaPlug ear plugs. Durable push-button hearing protection that attaches to safety vests or bumps caps. Hearing protection on call and you can replace ear plugs. Attach quickly and easily to most safety vests using 3M certified peel and stick adhesive. Durable push-button retractors with heavy duty spring and clutch assembly provides positive locking when tethered earplug is extended. Strong coiled spring retracts tethered earplugs quickly into a covered reflective pocket. Tethered earplugs extend over 15-inches for easy insertion into ear canal. Will not impede head rotation or movement. Never hunt for ear plugs again. Pull them out when needed, retract when not. Easy to install. Ensures compliance, convenience and lower cost. Great for bump caps, adhere securely to the outside of most bump caps. Corded. Noise reduction rating NRR: 25dB. Size: universal. Shape: flanged. Plug color: blue. Plug material: plastic. Cord color: black. Packaging: polybag.