BLACKROLL® Mini Flow Fascia Roller (15 x 5 cm), Small Fitness Roller for Self-Massage, Handy Massage Roller for Travel, Office or Gym, Medium Hardness, Made in GermanyTargeted Relief The surface of the Mini Flow, structured in two directions, combines smooth rolling with the active stimulation of a hard edge, depending on the rolling direction. This relieves discomfort in your feet, hands, arms, and more. To relieve tension in the soles of your feet, place the roller on the floor, position your foot on top of it, and gently roll back and forth, applying controlled pressure to help target and release tight muscles.