Haven Troopers were outfitted with unnamed exoskeletons that gave them superhuman prowess in combat.
Certain athletic female soldiers of Liquid Ocelot's private military were suited with exoskeletons that enhanced their physical capabilities beyond that the normal human, allowing them to cling to walls and leap several feet into the air. The vaguely green coloring of the exoskeleton, along with its distinctive abilities, is the reason the Haven Troopers were nicknamed "FROGS" or "Frog Soldiers".
The exoskeletons themselves appeared as skintight grey jumpsuits with several pieces of leather-like strips adorning its shoulders and frontal torso. Multiple beige harnesses, straps, and holsters were also wrapped around each Haven Trooper. Their gloves had an physical mechanism hidden within it that tightly stuck to flat surfaces on command, as did their boots, which had small claws on the boot's toes, the mechanism of which was speculated to employ van der Waals force. It is unknown if the Haven Troopers' primary characteristic; their ability to catapult themselves multiple feet into the air without any momentum, originated from the exoskeletons, their nanomachines, or a combination of the two. All of this gear was peaked with an intimidating, vaguely skull-like helmet with red glowing eyes.
Behind the scenes
The Haven Trooper exoskeleton looks almost identical to Laughing Octopus's jumpsuit in her Beast mode, the only major difference being its boots, coloring, and headgear.
The suits, merely titled "Haven Trooper", is a wearable suit in Metal Gear Survive, and can only be unlocked by purchasing it with 5000 BP. It is exclusive to female avatars, and it overrides the Accessory/Head setting when worn. Otherwise, the functionality is the same as other suits.