Review on Hikfly Silicone Gel Controller Cover Skin Protector for Sony Playstation 4 PS4/PS4 Slim/PS4 Pro Controller - Set of 2 Camouflage Covers with 8 FPS Pro Thumb Grip Caps (Red/Blue) by Nelly Villanueva

Bought this to reduce slippage during more intense games. That helped, but you can use more ribs in the mold on the sides to keep it from slipping. It was an improvement over nothing, but there is room for improvement. Pros: Affordable, looks good, and helps with traction. Cons: Not at the level of comfort and grip I would like, suggest adding more ribs on the sides.