The TRX Rocker Roller is a 13" foam roller designed for fitness and muscle recovery. With a diameter of 17 inches around and a height of 6 inches, this black foam roller is perfect for gym and training workouts. The TRX Rocker is a high-quality product from the TRX brand, known for its durable and effective fitness equipment. Its roller design allows for easy and comfortable use, making it an essential tool for athletes and fitness enthusiasts looking to alleviate muscle tension and improve flexibility.