Sony MDR-EX1000 Product Information page 9

The ultimate in sound insulation:
Noise isolation earbud
Pressure-relieving urethane foam inside the earbud equalizes pressure to the ear canal and
complements the complex bumps and dips of the inner-ear. Due to this, sound insulation is increased
with a fit that exceeds the comfort of previous earbuds.
Noise isolation earbud cross section
Low-density silicone
High- density silicone
Pressure-relieving
urethane foam

(GB)