The FROG system consists of a long-sleeve shirt, t-shirt, combat shirt, combat trousers, gloves, and a
balaclava. The shirts and trousers are camouflaged in
MARPAT, while the remainder are colored in either
sand or
olive drab. • The balaclava has a hinged face guard that lets the wearer pull down the face guard and expose his or her face without taking off a
helmet to remove the whole balaclava. • The long-sleeve shirt has a mock neck, moisture-wicking, and antimicrobial properties. • The t-shirt has most of the same properties as the long-sleeve shirt. • The combat shirt closely resembles the
Marine Corps Combat Utility Uniform, but the portion covered by the Marine's body armor (such as the
Outer Tactical Vest or
Modular Tactical Vest) is not as highly reinforced due to the protective qualities of the vest, and to prevent discomfort. There are pockets only on the upper sleeve. • The combat trousers also closely resemble the utility uniform, but there is an additional calf-pocket to help distinguish it from non-FROG trousers. • The gloves are designed to be highly durable. • Fire-resistant versions of cold-weather clothing are produced and issued as FROG equipment, including: • silkweight
undershirts and underdrawers (nicknamed "polypro"), designed by
Polartec as a
mock turtleneck meant to be worn next to skin • The Grid
Fleece Midweight underwear includes a pullover and pants (in green and coyote brown). • The Inclement Weather Combat Shirt is used for protection from rain and snow, since the All Purpose Environmental Clothing System (APECS) is not fire-resistant.
Flight and vehicle crewman suits are also re-classified as FROG II uniforms. The unit commander can dictate how much protection is needed by ordering one of two FROG levels, which alter how much protective clothing is necessary. The Corps is acquiring a new cold-weather flame-resistant shirt, specifically for the bitter cold winters of
Afghanistan, along with a new fire-resistant glove for increased insulation in cold-weather environments. ==History==