The Bumpy firm-density roller has alternating rows of firm finger-size bumps that mimic a kneading massage style. It is ideal for relieving tight muscles, performing myofascial release, and providing a stimulating deep tissue massage. The bump pattern stretches muscles in multiple directions simultaneously. This relieves tightness and knots and erodes trigger points, which reduces pain and improves flexibility, mobility, and range of motion. Most often used between workouts when muscles are tight and stiff.