The product is exactly what I wanted, to have better grip on the controller without slipping and absorbing sweat. The material is of good quality and there are instructions, but I also saw a YouTube tutorial which made the application very easy. If you don't apply it correctly, it easily comes off. It needs to be applied step by step to ensure there are no gaps like bubbles. For 15€, I believe it's worth it, not more. There are also Chinese alternatives for 4€, but I believe kontrolfreeks and lizard skins have better quality for sure. I recommend it especially for those who play multiplayer games for hours and want better grip.