insole
nounThe inner sole of a shoe or boot.
nounAn extra strip of material put inside a shoe for comfort or protection.
nounThe inner sole of a boot or shoe: opposed to out-sole. See cut under
The inside sole of a boot or shoe; also, a loose, thin strip of leather, felt, etc., placed inside the shoe for warmth or ease.
nounThe inside
the inner sole of a shoe or boot where the foot rests