The Superfeet Premium Insole Carbon Fiber Trim to Fit Ultralight & High Performance-G Adults UK 12 - 13.5 is the perfect choice for those looking for a lightweight and high performance insole. This insole is designed to provide superior cushioning and support for the foot, while also helping to reduce fatigue and improve overall foot health. The insole is made from a combination of carbon fiber and foam, which provides a lightweight and durable construction. The insole also features a trim-to-fit design, allowing it to be customized to fit any foot size. The insole is designed to provide maximum comfort and support, while also helping to reduce friction and improve overall foot health. The insole also features a moisture-wicking top cover to help keep feet dry and comfortable. The insole is easy to install and can be used in any type of shoe. It is also designed to provide long-lasting support and cushioning, making it an ideal choice for those looking for a high performance insole.