I'm selling one wristband, as I purchased two in gray. Besides sports, it's also said to be helpful for nausea caused by weather sensitivity. You can make a small ball, about the size of your little fingertip, out of aluminum foil and place it on the P6 acupressure point (Neiguan). Then, secure it with the wristband. The P6 point is located on the inside of your wrist, three finger widths down from the center of the crease where your wrist meets your hand, on the outer side of your index finger when your palm is facing up.