HOWARD LEIGHT LPF-1 MAXIMUM LITE EAR PLUGS DISPOSABLE NRR 30 UNCORDED 200 PAIRS/BOX MAXIMUM LITE - LOW PRESSURE FOAM FOR COMFORT. LOW PRESSURE POLYURETHANE FOAM EXPANDS GENTLY FOR COMFORTABLE LONG-TERM WEAR. IDEAL SIZE FOR WORKERS WITH SMALLER EAR CANALS. CONTOURED T-SHAPE FOR EASY HANDLING AND WEAR. SMOOTH SOIL- CLOSED-CELL FOAM SKIN PREVENTS DIRT BUILD-UP.INDIVIDUALLY WRAPPED. NRR 30 RATED WHEN TESTED TO ANSI STANDARD S3.19. EPA COMPLIANT.