Pura-Fit® for the PlugStation - 6845 500 PAIR PER REFILL Fit to be tried. Pura-Fit® earplugs are tapered so they are easier to insert in any size ear canal. And they are longer too, so they are easier to grasp. More Comfort, Less Complaining. Pura-Fit® is designed for increased compliance and fewer complaints. The special foam is formulated for softness and comfort, and the outer surface is smooth, so it doesnt irritate the ear canal. NRR 33. Highest Independently Tested NRR Available. Pura-Fit® is independently tested to ANSI S3.19-1974 by Michael & Associates, Inc., State College, PA. So you know youre getting excellent protection against industrial noise. Features • 100% PVC-Free. • Highest Independently tested NRR 33. • Tapered for easier insertion. • Improved, softer foam for maximum comfort. • Hygienically packaged in biodegradable paper pouches. • Non-irritating, smooth surface. • Longer length for easy fitting and removal. • The bright green color is a trademark of Moldex-Metric, Inc. and also provides easy compliance checks.