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Covering ear hole using the entire surface, No.1 provides a good fit with comfort. A basic type for overall range of sounds.
 
No.22 effectively cuts high-pitched noise. The center hole allows wearer better communication.
 
The umbrella-shaped design fits on most ear shapes / sizes.No.10 effectively cuts most sound ranges and provides better comfort.
         
 
 
The umbrella-shaped design provides a good it with comfort, ,just like No.10. The tip of the ear plug can be inserted smoothly in accordance with the inner shape of ear hole.
 
Good insulation of sound is obtained with three-fold wings.Less contacting surface area avoids skin irritation.
 
The improved three-fold wings effectively insulates both high-and low-pitched sounds.No.35 is also effective against explosive and impact sounds.
         
 
   
The moisture-absorbing sponge material effectively elinlinates the moisture built up inside ear.No.50 insulates high-pitched sound and allows sound communication.
 
Large-and small-sized ball shapes provide a good fit on most ear shapes, The hard plastic material avoids skin irritation and is good for rubber allergic skin.
   
 
Specifications/Noise Reduction Rate (dB) (Avg.)
Hz
125 250 500 1,000 2,000 4,000 8,000  
Hz
125 250 500 1,000 2,000 4,000 8,000
No.1 13 15.5 16 21 27 28 27   No.30 15 16.5 22.5 24.5 26.5 26.5 26
No.22 8 8.5 9 16 23 25 26   No.35 18 20 21 22 26.5 27 25.5
No.10 17.5 18.5

25

27.5 29.5 29.5

30

  No.50 9 9.5 9.5 16 21.5 26.5 26
No.15 16.5 17.5 17.5 22.5

29

30 29   No.60 17 20 21.5 24 31 35.5 30
 
 
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