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The T431s has the typical high-quality construction designed to meet high standards. The carbon fiber used adds strength while keeping the weight down to a minimum.
At only 0.81 inches thick, the laptop is very easy to carry and will fit in almost any gear bag with a big pocket.
The thin profile is possible due to the thin display on the ThinkPad T431s as seen in this photo. The display is not the brightest on the market at 250 nits, but the viewing angles are decent.
The keyboard is good as is expected on a ThinkPad and the unique trackpad is over-sized. More on the trackpad later.
Chiclet keyboard, glass trackpad
Lenovo has perfected the laptop keyboard and the one on the T431s is as good as any of them. The chiclet keys have good travel and typing is a good experience.
The keyboard has the expected red trackpoint stick in the middle for those who prefer that control over the trackpad. The trackpad is made of glass and has a good feel for controlling the cursor and performing the gestures for operating Windows 8.