Sonic Defender

[Features]
· Design based on ergonomics and the multi-flange trunk conform to ear shapes to maintain comfort and the ear piece.
· Earplugs officially adopted by military and police all around the world, including the US military.
· Medical polymer resin is used for the material.
· Phone conversations are possible while wearing the earplugs.
· Shuts out only the harmful noise and does not interfere with normal conversations.