I am selling this item because I purchased it new on Amazon and only used it a few times. I have cleaned it with disinfectant wipes, though I am not a professional. It is almost new, but please understand that it is a used item. The NABOSO Hand Activation Kit includes three balls, perfect for grip strengthening and myofascial massage, and awakens the sense of touch in your hands. - Brand: NABOSO - Product Name: Hand Activation Kit - Number of Balls: 3 - Uses: Grip strengthening, myofascial massage, improved finger dexterity - Benefits: Awakens hand sensation, improves grip strength, releases muscle tension, improves finger dexterity, enhances mental focus, hand rehabilitation Thank you for looking.