TVK-3 suit is identical to later TVK suits used with MSK-4 suits. Basically it's a little redesigned VK-3 ventilation suit. Suit is made out of warm material and has special socks. Inside, flixable tubes run all over the suit. When connected to the aircraft's ventilation system, either cold or hot air runs through them warming up or coiling off pilot's body. If pilot is forced to eject, suit's warm material provides an extra protection from harsh weather conditions and cold water.   Front view of the TVK-3 suit with attached TVN socks. Back view of the suit. Note the large material cover in the waist area which covers air tubes. Shown here is right air tube end which should be attached to the connector inside of the main MSK suit. Left air tube is closed by a red metal cap which prevents air from exiting the suit when in use. On other suits I've seen there was no such cap so apparently it is often left out. Chest area houses two horizontal and one vertical pockets. Horizontal pockets are used to store wool gloves, vertical pocket is for some other stuff. Here is the ID tag of the suit. It follows the usual pattern and contains name of the suit on the first line, serial number on the second and size of the suit on a third line. TVN socks are attached to the TVK-3 suit with laces. Socks could be easily replaced with a different pair when needed. ID tag of the left sock. First line gives designation of the product, second line states that this is left sock and third line gives sock's size. ID tag on the right sock is excatly the same as the one on the left one, with the exception that it says that this is the right sock on the second line.