I was not looking for a bag that covered the entire laptop, I really wanted a formal back cover of Stairway to close with a clap in front of the screen. And that's exactly what this product, so I did not include comments that are disappointed it is not a full case, the description seemed clear ... This is an official product of Wiko therefore no compatibility problem with the Stairway, and screen protection is complete. The cache is aesthetically beautiful and soft to the touch and protector for the device. Contrary to some reviews, I find it worth the price (about 15 euros), because it is found to not less than 25 euros on other sites! A good product so I am completely satisfied, but which will not satisfy those who want full protection. So beware product descriptions!