OR-201

[7][5] The prototype presented in 1976 by Orlite consisted of one-piece, glass-reinforced plastic (GRP) round shell 8mm thick, made of fiberglass fibers placed in an ethyl cellulose resin under high pressure.

It had a black rubber rim-band 10mm thick[8] and seven metal rivets – one placed at the front, four at the sides, and two at the back – to secure a helmet liner of "cradle" type.

As the name implies, it consists of three 25mm Khaki-green synthetic fabric crossed straps attached to a very light tan head-band (or sweat-band) that is fitted within a cushion of four inner black high-density neoprene foam pads – two side, one front, and one rear – that help to secure the helmet in the wearer's head, while providing an impact- and shock-absorbing capability.

[5] Copied after the HSAT Mk II paratrooper helmet harness, the chin-strap system is fitted directly to the helmet shell at three points by rectangular metal rings; made of 20mm Khaki-green synthetic canvas web, the harness is equipped with two metal friction buckles at the chin-straps and is reinforced by an integral tan leather chin-cup.

[5] This helmet, also designated M76/85,[9] OR 202-76 or OR-402, was introduced in 1985 as an improved variant of the earlier Model 76, which consists of one-piece, ballistic nylon or reinforced fiberglass and plastic Kevlar composite structure that weights 1.65 kg.

In contrast to its predecessor, the Model 76-85 had its interior lined entirely by light tan fiberglass fabric and a shock-absorbing neoprene disc 60mm in diameter, is placed on the inside.

[10] The helmet is fitted with a new version of the "cradle"- type liner, now consisting of three 25mm black synthetic fabric crossed straps attached to a light tan sweat-band and features a new 20mm olive green nylon adjustable strap system provided with a black quick-release plastic buckle backed by a light tan triangular leather piece to protect the wearer's face.

[40] The OR-201 helmet began to be marketed to foreign recipients of Israeli military aid in the late 1970s and early 1980s, and the first Latin American country to receive it was Nicaragua in 1977-78.