T-shirt

A T-shirt, also known as a T shirt or tee, is a style of shirt that is often used for casual wear. It is named such because of its body and arms bearing the resemblance to the letter "T." It featured several designer logos and adverts on it.

Usage
T-shirts were utilized by the Militaires Sans Frontieres while off duty, with at least one being found within the Mother Base's training facility's firing range. At least one MSF member also collected various t-shirts, as (s)he was described to be a "slave of fashion."

PMCs can sometimes wear t-shirts with their uniform, provided that the environment for their current assignment was warm enough to require it.

Behind the scenes
T-shirts were a recurring procurable item in the Metal Gear series since Metal Gear Solid 4: Guns of the Patriots and its online mode, where players could procure T-shirts, which included the Uniqlo line, for usage in the latter. T-shirts in Peace Walker appeared as both a standard item and as a passcode-unlocked DLC item, the latter primarily advertizing various product placement items related to the in-game shirts. Some of these were removed from the international releases due to either product placement-related reasons or simply because the items weren't applicable to western audiences. However, the Walkman, HORI, and Uniqlo shirts were retained, alongside the FOX shirt.