25cm to 27cm 【Warmth-Boosting Socks】In the winter of 2025, "warm socks" that revolutionize cold-sensitivity measures will be born. MIZIKIRIN has brought together fiber science and Japanese wisdom for warmth to pursue functionality and comfort to the extreme. The biggest points are the "ankle-focused warmth retention" and the "moisture-absorbing, heat-generating material" W approach. It firmly guards the ankles, where the body's chill is said to begin, and prevents internal heat from escaping. The fusion material of polyester and acrylic has 15% higher heat retention than wool and is durable, making it difficult to lose its shape even when washed daily. It's a new winter staple that allows you to boost your warmth just by wearing it. 【Full-body warmth with ankle-focused care】The fluffy, thick pile wraps around the ankles, the starting point of coldness. It provides a firm warmth retention, as if there were a dedicated heating pad at your feet. This structure moderately stimulates Sanyinjiao (SP6), supporting blood circulation. With the warmth that gently spreads from your toes, it brings comfortable sleep and relaxation in the cold season. 【Double strategy for warmth: self-heating and protection】The latest "moisture-absorbing, heat-generating fiber" functions as a "self-heating engine" that captures the slight moisture at your feet and converts it into heat. And the soft brushed lining throughout the inside becomes a "heat-retaining air pad" that envelops that heat. With double warmth, it alleviates sudden chills during sleep and supports comfortable sleep until morning. 【Feel it with every wash, high-quality durability】We have put the strength to withstand daily washing into the material and sewing. The combination of polyester and acrylic keeps the shape without losing its form. The anti-pilling processing and reinforced toes and heels withstand repeated use and do not deteriorate the cleanliness and fluffiness. It's a basic model of warmth-boosting socks that will stay with you for a long time. 【From everyday use to gifts, high-quality warmth】The simple and sophisticated design can be used in all situations, regardless of gender. It's a multi-functional cold-weather supporter that can be used for relaxing indoors, as well as in the office or for a quick outing. It's also perfect as a gift for your loved ones, and it's a heartfelt item for spending the winter healthily.