These "Officially Licensed Earplugs of NASCAR" let your employees show their love for NASCAR racing. Plus, their extra soft, PVC-Free foam and tapered design fit snugly and comfortably in the ear, and their bright fun colors provide easy compliance checks. Available with the PlugStation dispenser. Highest independently tested NRR 33. Tested to ANSI S3.19-1974. NASCAR is a registered trademark of The National Association for Stock Car Auto Racing, Inc. The NASCAR trademarks are used under license by the National Association for Stock Car Auto Racing, Inc. The random color patterns are a registered trademark of Moldex-Metric, Inc. The bright green color is a trademark of Moldex-Metric, Inc.