![lenovo b590 model 20206 lenovo b590 model 20206](https://www.vymena-displeje.cz/3148748-thickbox/ibm-lenovo-b590-20206-displej-lcd-156-40pin-hd-led.jpg)
Opening the display with one hand is possible. The hinges meanwhile hold the display in place, although they do allow some wobbling. This is something that also applies to the display, particularly in the middle, where pressure applied to the back of the display leads to denting inwards and changes to the displayed images. The base unit could also be a bit more rigid, since it can be warped visibly with a small amount of force. For instance when applying some pressure to the front the base unit dents inwards, or when applying pressure to the edge on the left next to the keyboard the right front corner of the base unit lifts upwards.
![lenovo b590 model 20206 lenovo b590 model 20206](https://auctions.c.yimg.jp/images.auctions.yahoo.co.jp/image/dr000/auc0208/users/82a422ac6ee5d41a54fe24292056b5b597021ff1/i-img1200x909-1628575200x1nrfi18372.jpg)
![lenovo b590 model 20206 lenovo b590 model 20206](https://www.notebookcheck.net/uploads/tx_nbc2/920942-1.jpg)
The stability of the case is decent for this price range, although it could be better overall. The ThinkPad Edge E530 meanwhile is also composed of matte black plastic, while only the HP ProBook 4545s is able to improve on the others with the back of the display, the palm resting area, and the speaker mesh being composed of aluminum. In the case of the B590 on the other hand, the aforementioned elements also have a matte black surface. The case of the B580 is primarily composed of matte black plastic, and merely the display frame and the area between hinges have a glossy surface, while the back of the display is covered with a fine pattern. Also, the relation to the B570, the B570e and the B575e are obvious, although they are certainly more pronounced in these cases. The case of the B580 is practically identical to that of the Lenovo B590, whereby the differences are merely of a visual nature.