POLYURETHANE FOAM Soft foam delivers superior long-wearing comfort and solid performance. BELL-SHAPED DESIGN Delivers maximum in-ear comfort without backing out of the ear canal, easier to insert. SMOOTH, SOIL-RESISTANT SKIN Prevents dirt or other substances from accumulating on skin or entering ear canal. 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-used polyurethane earplug, Max offers superior noise-blocking performance in a single-use earplug. Max's new 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 on.