For years Peltor's best, used in airports and by government (olive drab), excellent damping, also at low frequencies. Skin-friendly layer on ear pads, with a layer of soft foam below it, and then a separate ring of liquid with a patented anti-leak system.
Pressure relief prevents overpressure on the eardrum.

Good hearing protection must provide sufficient defence, but first and foremost it must offer maximum comfort, so that it is actually worn in noisy conditions.
Soft unbreakable springy head frame with 2-point support system, the give is comfortable, no protruding pieces.
Easy height adjustment, ear pads easy to replace.

Standard: EN 352-1:2002, EN 352-3:2002