Sock Snob Ladies Thick Warm Funky Checkered Patterned Breathable Wool Silk Blend Socks (4 8 uk, 18 Grey/Navy)

Amazon

These Japanese styled checkered socks aren't just impressive in how they look but also in their functionality. These socks are designed to keep your feet warm without being too bulky and heavy. The wool fibre traps warm air and acts as a fantastic insulator to keep your feet warm when it really matters in the winter months. The silk content allows the sock to become more lightweight. Also silk is incorporated into these socks to help them become more breathable. They are a size 4-8 UK / 37-42 Eur / 5-9 US and are safely machine washable.

Spartoo

Sock Snob - women's Socks in Marine