These socks are made of 100% acrylic with excellent heat retention and feature a striped pattern. They are size 23-25cm. They are quite thick and appear to be warm. How about them for those in cold regions? The actual product is a brighter beige than in the photos. Due to packaging constraints, they will be shipped without the package. Please be aware of this. - Size: 23-25cm - Material: 100% Acrylic - Design: Striped pattern - Washing instructions: Machine washable at 30°C - Features: Socks with excellent heat retention