SureFire Ep10 Sonic defenders ultra max full-block Ep10 Sonic defenders ultra max provide protection against two types of noise: continuous noise (example: loud Roar of an engine) and Impulse noise (example: gunshot). they feature memory-foam comply Canal tips for all-day comfort and a near-custom fit that provides the highest level of hearing protection of any Sonic defenders earplug. Features:- high-level, full-block hearing protection- provide protection against two types of noise: continuous noise and Impulse noise- patented earlock rings provide unparalleled retention- replaceable memory-foam comply Canal tips provide comfort & secure seal- hypoallergenic soft-polymer construction provides all-day comfort & durability- blister card with one pair large black earplugs- plastic carry case"..