Based on the original ZSh-7 design of 1987, it was introduced

in 1990.

Worn by pilots flying SU-27's and MiG-29's, it is equipped with a bracket

where a Night Vision Equipment (NVE) or Sh-3UM-1 target designator is

fitted.

Those devices allow the pilot to fire Air to Air missiles locking on targets by  by looking at them.

The ZSh-7 uses, as the ZSh-3 and -5, an occipital bladder to tighten the

pilot's face to the KM-34 Series 2 oxygen mask during High "G"

manoeuvres.

NVE or Sh-3UM-1 target designator installation bracket. It can be adjusted in order to

correctly place the devices in front of the pilot's eye.

Inside view. The padded occipital bladder is clearly visible.

KM-34 Series 2 oxygen mask.

The rubber part of the mask is the same as on the KM-35.