The RoToTo Double Face Socks in Olive / Khaki are crafted from a double face cotton and merino wool mix. The socks are soft, breathable and resilient. The merino wool on the outside increases heat retention. PRODUCT FEATURES: Small - UK 4-6, Medium UK 6-8, Large - UK 8-11 Cotton and merino wool blend Double faced Breathable Increased heat retention RoToTo Double Faced Socks