Developed sometime in mid to late 1950s, VKK-3 was one of the first Soviet high altitude compensation suits. It's overall design is rather similar to later models, but contains a number noticable differences. All of the differences are in the way the adjusting laces are located on the suit. In fact my overall impression from seeing a number of different VKK suit versions, all of them (except of the VKK-4P which has pressure tubes in the front waist area) differ visually only in the way these adjusting laces are located on the suit. That said, take a look at pictures below - they will show you the unique features of this suit better then my words.   VKK-3M's carrying bag. Close up on the ID tag located on the carrying bag. It says that this is a VKK-3M series 2 suit, with an id number 916067 and is of size 8. Overall view of the suit - note how similar this suit is to the later produced models, but yet contains a number of unique features. ID tag located on the suit. It repeats the information found on carrying bag's tag. Close up shot of the suit's front waist area. Note two small vertical adjusting laces. Closer to the top are two small hooks - apparently these were used to secure the helmet on pilot's head. Shown on this page is one of the suit's sleeves. Note the adjusting laces that run through the whole length of the sleeve. Close up on the top back portion of the suit. Once agian note the laces - they run all the way down to legs. Hidden by the horizontal pressure tube are two small hooks, which are used to secure the helmet on the back.