While the lightweight chassis is so convenient to carry around, it's the sustainable materials that make owning this machine a true delight. The ThinkPad T14 Gen 4 laptop is composed of 90% recycled magnesium on the C frame, and for the Storm Grey models, there's 55% recycled aluminum on the D cover. Along with post-consumer content, recycled plastic in the enclosures for the speaker and battery, and the AC adapter, the packaging is plastic-free with 90% recycled and/or sustainable materials. Plus, the manufacturing process uses low-temperature soldering.