The Lenovo ideapad 3 fits perfectly in the case, and this case comfortably fits in a laptop backpack.

I got it for an Ideapad 3. Very good quality and the front pocket comfortably fits a slim mouse and the charger.

Update: One year later, I chose it again for hosting an Asus Vivobook. If someone wants a sleeve-type case for a 15.6'' laptop, it is one of the best choices in terms of price/quality.

The laptop I have is exactly the maximum size that fits in this case. As a result, I only had difficulty putting it in and closing it the first time, but the next time I managed to get the hang of it. The front pocket definitely fits the charging cable and the mouse, and the padding inside ensures that things don't hit the laptop too much.

It helped a lot during the trip I took, as I needed to travel with the laptop and I was able to leave it in the suitcase instead of carrying it on my back.