The Charlie is made with lush sheepskin that is attached to a suede leather outer. This creates a much more durable and hard wearing product compared to one that is made solely from double face sheepskin. The soft wool fibres of natural sheepskin are highly breathable and act as a natural insulator to keep your feet warm, dry and comfortable. Thick shearling wool inside moulds to the shape of your foot creating natural arch support. They are manufactured with a tough TPR sole that provides extra traction and durability and allowing you the flexibility of wearing them outdoors.