Muscle roller stick, also known as a foam roller or trigger point roller. It is a sports body massager tool used for physical therapy and muscle recovery.
Function: It is designed to help prevent and relieve muscle soreness, break up lactic acid buildup, and speed up muscle recovery.
Usage: It can be used before or after workouts to apply targeted pressure to muscles and tissues, which helps loosen muscles and treat injuries and muscle knots.
Features: The one in the image features textured (spiky) rolling parts and an ergonomic handle design for deep tissue massage and managing muscle pain.