The ThinkPad Ultralight cases are ideal for users who rely on technology to power their day. Users who value less-is-more, will still benefit from the storage surprises this case offers when more is needed. No other case on the market combines military grade materials, like Kevlar, and ripstop, with composite rods to create maximum protection at such a light weight.- Military Grade materials: Kevlar blend and Ripstop provide maximum protection at minimum weight. - Composite rods protect the system. - EVA foam back adds stylish design as well as added protection. - Fits up to 14.1inch ThinkPad notebooks. - Backpack only weighs 0.65kg, Topload only weights 0.55kg. - Pockets for smart phone, tablet, and AC adaptor. - Limited Lifetime Warranty. - ThinkPad Branded.