Sox United Kingdom Flag SocksThe United Kingdom flag is a combination of the three kingdom's crosses which are blue red and white. Also known as the Union Jack or Royal Union Flag. Product details: Fabric type: 61% Polyester 19% Spandex 20% Elastane. Care instructions: Machine Wash Seamless toe to avoid blisters. Lightweight material to keep your feet cool and dry. Y-shaped heel for a well-rounded fit and anti-slip. Clean look and feel on the inside of the sock. No tassels and loose yarns. 16cm cuff for everyday wear and all types of sports. HTFU technology. Reusable packaging.