PlugsSafety Zip-outs is a retractable hearing protection system for hardhats that is there when you need it. Tethered earplugs extend over 10-inches for easy insertion into ear canals. Very comfortable roll and expand fit. Great for extremely noisy environments. Conical shape is designed for fit and comfort. TPU insert provides easy attachment to all PlugsSafety products. NRR 30/SLC8022, Class 4/SNR 35. Corded. Noise reduction rating NRR: 30dB. Size: universal. Shape: tapered. Plug color: orange. Plug material: vinyl. Cord color: black. Packaging: Clamshell. Standards: ANSI S3.19-1974. Green environmental attribute: does not contain PVC.