Reduces noise levels by 34 dB Model is compatible for use with the 3M™ E-A-RFit™ Validation system and available as a probed plug Tapered design effectively seals ear canal Softer formulation hypoallergenic foam provides minimum pressure in the ear Designed to fit smaller ear canals 200 pairs per box Available with probed feature for use with 3M™ E-A-RFit™ Dual-Ear Validation System