Description: Mild ingredient, no damage to shoes, long time protection. Professional complementary dyes, not dirty, not easy to fade. After the use of anti-oxidation pen, the upper will form a protective film, effectively waterproof, to prevent oxidation. Don't worry about your shoes turning yellow, blackening the edges, or getting dirty over time. Effectively fill color differences and make shoes look new. It is constructed of plastic material. The length of this product is 13.8cm. Widespread use. It can be used to remove yellow from a variety of white shoes, such as shell toe shoes, canvas shoes, sneakers, air force shoes, etc. Item Name: Antioxidant Pen Material: Plastic Style: A-Whitening Pen, B-Antioxidant Pen, C-Black Pen Features: Complementary Color, Antioxidant, Waterproof Size Details: Length: 13.8cm/5.43" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Antioxidant Pen