Silk Tweed Specdyed Half Crafted from 100% kasuri-dyed silk yarn, these socks offer a unique, luxurious experience. The yarn is spun from recycled silk fibers, giving it a naturally varied texture that adds a handcrafted warmth and charm. Silky Smooth Comfort Silk's exceptional smoothness and skin-friendly qualities make these socks a pleasure to wear directly on bare skin, even for those with sensitive skin. High Breathability Silk naturally breathes, wicking moisture and reducing any chance of discomfort. They stay cool in summer and comfortable year-round. Excellent Insulation Silk has natural thermoregulating properties, keeping warmth close to the skin even in a lightweight form, making these socks ideal for colder seasons. Lightweight with a Perfect Fit Lightweight and flexible, silk conforms comfortably to your feet, providing a secure, comfortable fit without bulk. Natural Antibacterial Properties Silk is naturally antibacterial, resisting odors and maintaining freshness, enhancing both comfort and hygiene. Though silk is delicate, its unparalleled comfort and quality make these socks a lasting indulgence, one that's hard to resist once experienced. Construction : Rib Knitting Composition : 95% Silk 4% Polyester 1% Spandex COO : Made in Japan Size guide : Size Medium : Length 7.8" and fit best for 25-28cm feet, approximately US Men's size 7-10 Size Large : Length 8.7" and fit best for 27-30cm feet, approximately US Men's size 9-12