This J Jeans by Debenhams Girls Dressy Jacket in navy/white stripes is perfect for a 10-year-old girl. Made from a polyester blend outer shell material, it features long sleeves and a regular fit, making it suitable for various occasions such as parties, weddings, casual outings, formal events, and christenings. Machine washable and designed for autumn, summer, or spring, this stylish jacket is a versatile addition to any young girl's wardrobe.