Workers who need to block out loud noise demand the best protection and comfort available in an earplug. That's where max comes in. The world's most popular polyurethane foam earplug, max offers superior noise-blocking performance in a single-use earplug. Max's enhanced contoured shape is easier to insert and resists backing out of the ear canal, while its softer foam delivers superior long-wearing comfort - delivering solid performance that your workers can depend onfeaturesthe world's most-used polyurethane foam earplugbell shape delivers maximum in-ear comfortcontoured design easier to insert, resists tendency to back-out of ear canalpolyurethane foam enhances comfort, especially for long-term wearsmooth, soil-resistant closed cell-foam skin prevents dirt build-up.