Issued in the early '60, it is based on a internal leather helmet

and an external, rigid aluminium shell. The shell is padded and has a

notch to mate with the single ridge of the leather helmet to hold both

in place.

The KM-32 oxygen mask is held in place by adjustable straps, a metal

bracket on top, and a press stud at the bottom.

A throat microphone is worn with this specimen. Produced in different

versions, it was used on almost all Soviet aircraft and helicopters of

the era.

The ZSh-3M uses an occipital bladder which fits against the back of the

head of the pilot, pressurized by the oxygen mask system.

This system tightens the pilot's face against the oxygen mask

automatically as the "G" force increases.

Shz-61 Leather helmet and PO-1M "Bugeye" sunglasses

The occipital bladder. Inserted into the aft part of the leather hood, which is featuring  a dedicated pocket, it is secured in position by  four snap-on buttons. (see above picture)

The LA-3 (or -5) throat microphone.

KM-32 oxygen mask.