T-60 Power Armor

T-60 powered combat infantry armor is an advanced operational power armor type developed on contract from the United States government.

Design
As with other power armor models, the T-60 is designed for a single operator. Compared to the T-45, the T-60 is much more heavily armored, although it lacks the sophisticated armor pattern of the T-51. The end result is an extremely protective armor system, though protection comes at the expense of agility and a reduction in battlefield awareness, as the additional power pack armor plating reduces rear visibility together with the oversized pauldrons. As usual for T-series power armor, the helmet completes the ensemble and includes an air filtration system, a bullet-proof vision slit, an electric lamp, and external ports that allow the operator to listen to his surroundings and double as attachments points for extensions. The standard upgrade is a drop-down ocular.

Any shortcomings of the T-60 were compensated for through deployment: a T-60 power armor unit was usually deployed with support from light infantry units, equipped with energy weapons. After the Great War, T-60 power armor became a rare sight until the reformed Brotherhood of Steel under Elder Arthur Maxson recovered a substantial number of these suits (or T-45 conversion packs) and adopted the T-60 as the service uniform of its soldiers. 

Behind the scenes
"Our primary goal with the power armor was to make it feel less like a suit that you'd wear and more like a vehicle you'd operate. this design began as a reimagining of the T-45d, but it was different enough that we dubbed it the T-60. This way we could bring the T-45 back as its own variant. Although the look was settled on early, some details and proportions were revisited when we adapted the power armor to work as a modular system of plates that attached to a standardized endoframe. In this early version, the arms and legs needed more bulk to make room for the operator and the frame."

- The Art of Fallout 4