Cool Bananas ShockProof Pouch Notebook Bag:
narrowest of the three cases, only one side open and very difficult to get in and out of the notebook. There may be in size to something else. But quickly and unpacking is not. In my view not appropriate for the X121e.
Lenovo ThinkPad X100e Sleeve Case:
also very close fitting, no frills, acts wertig, turning function as the previous speaker just a marketing gimmick. The main problem are the corners, because you have to be careful when closing the zipper very that the edge protection corners of the notebook actually protects. Zipper closes otherwise very smoothly. In keeping with the device with ThinkPad logo. Despite the lack of the edges of my choice.
Dicota PerfectSkin notebook sleeve for:
the biggest of the three acts Sleeves, well finished. Zipper on two sides, extra inside pocket for small things (mouse pad or notepad), good price, very good solution of the edge protector. Here the edge protector is attached to the lower casing soil and enough to place the handset of the X121e's to the top of Gerätes.So it is very easy to zip close without the Zadelka pay particular attention to the edges need to. Shortcoming this Sleeves is the rear upper bead. At first glance it seems as if it would be especially good cushion. The impression is deceptive, however, because only the rear upper bead rests on the notebook and in front and behind an air cushion created. Generally the notebook is very loose in the envelope and this works by (and by the bead) especially very thick.
In summary, I can say:
Of the three, is not perfect for the X121e.
Cool Bananas ShockProof Pouch Notebook Bag: rather unsuitable
Lenovo ThinkPad X100e Sleeve Case: In my opinion the most appropriate
Dicota PerfectSkin notebook sleeve for: almost equal to being with ThinkPad Sleeve, especially when packing up to go faster and less fit among the Dicota 1st choice