DescriptionSuperior color stability, fade resistant, gentle and continuous force. High elasticity, strength, elasticity, good memory and excellent rebound. Safe medical grade polyurethane. Latex free safe for sensitive patients. Clear color, invisible, more nice looking. To make sure the well orthodontic treatment effects, we recommend to ask the help from a professional dentist.Feature- Color: Mixed Color. - Material: Plastic. - Size: About 6.3x1.2x0.2cm. - Bright color, cute, more nice looking. - Superior Color Stability, fade resistant, gentle and continuous force. - High elasticity, strength, elasticity, good memory and excellent rebound. - Safe medical grade polyurethane. Latex free safe for sensitive patients. - To make sure the well orthodontic treatment effects, we recommend to ask the help from a professional dentist.