The Kontrol Freek Ps4 Controller Performance Grips 2 Pk in Black are designed for Sony PlayStation 4 controllers. Made of silicone, gel, or rubber, these grips provide a comfortable and secure grip for improved performance during gaming. These grips are convenient and easy to use. The Kontrol Freek Ps4 Controller Performance Grips are a must-have accessory for serious gamers looking to enhance their gaming experience.