Good day, enter lenovo yoga smart tab 10 hülle on Google. There are lots of covers for the Smart Tab.
Attention, there is another older one, the predecessor of the Yoga Smart Tab, which has a wider stand at the bottom. Here are the links, some of the shops are from abroad.
Or follow these links directly.

https://www.mytrendyphone.ch/shop...

https://www.mytrendyphone.ch/shop...

https://www.brack.ch/lenovo-tab...

https://www.mytrendyphone.ch/shop...

The internet shop my Trendy Phone from Austria has a lot of cases. Just make sure you buy the cover for the newer Yoga Smart Tab, with the smaller cut-out at the bottom for the stand, and not the cover with the wider cut-out. But you can see quite well in the pictures which cover is for this tablet.
I hope I was able to help you with this.
These are only tips, I am not responsible for any wrong purchases.
Friendly healthy greetings

Yes, there is:
Trust Primo Soft Sleeve black for 11.6" notebooks + tablets. Neoprene for maximum elasticity and durability. Soft and lightweight protects from scratches and bumps. Easy to use with opening on top and two long zipper sliders. Slim design fits easily into the case.