Using blue 65% virgin wool, 34% polyamide and 1% elastane, these keep warm no show socks by Falke are perfect for women and a must have. Also the dark sapphire socks are designed in a plain pattern, It is recommended to wash at 30 degrees to keep these socks in good condition. All the socks come complete with falke packaging. The Falke Keep Warm No Show Socks - Dark Sapphire are perfect for cold days with their climate regulating merino wool and padded plush sole, making these perfect to be worn in the winter. Due to the high cuff and special heel construction, this sock has been made with no silicone and it still offers optimum grip within the shoe. An anatomical fit has also been used to help create this sock providing you with even more comfort and grip. KEY FEATURES 65% Virgin Wool, 34% Polyamide and 1% Elastane Non Slip , Climate-Regulating , Plush Sole , Anatomical Fit Shoe Liners Smooth Structure Medium Thickness Wash at 30 degrees Complete with Falke packaging.