If you use a Mous or a solid suit, i would totally recommend these in clear or black depending on your case color. The pics I took were to show them installed. I had to get light between the case and the camera for them to show up. I have asked my kids if they can tell a difference in my case and they all guessed stuff that wasn’t there. They haven’t noticed these strips.
Now that said, these don’t add the amount of grip that say, a speck grip has , but it’s noticeable how much more they add.
The Mous case is tough to pick up when laying fat by its sides. It’s a hard plastic that is slick. Much like the solid suit. With 2 strips added to the sides it’s now very easy to do so. I also curved one around the bottom corner where my pinky rests and it holds great. But again I also love my phone loop that makes it much easier to hold.