Description de chez Amazon USA : - Flexes Thumb: A bent yet flexible thumb is critical for full tone production. Thumb has options, depending on hand size, to curl comfortably into the loop of the elephant's trunk or puffed cheek.<br /> - Relaxes Hand: Softly rounds index and middle fingers over the chubby body of the elephant opens to prevent tension in the hand.<br /> - Positions Index Finger: Making direct contact with the bow stick between the first and second knuckles, the index finger correctly to rest on bow stick.<br /> - Universal Fit: This accessory will help form a relaxed and effective bow hold for beginning cellists and cellists, age 4 thru adult, needing to relax or support a correct bow hold.<br />