Meidai Nighttime Sleep Warmer Retail Price: ¥2178 Color: Gray Size Guide: Up to approximately 42cm calf circumference Materials: Acrylic, Nylon, Polyester, Rayon, Polyurethane, Wool Made in Japan ● Foot warmer for insomnia relief and sound sleep ● Keeps calves and heels warm ● Warming the feet relaxes cold, stiff muscles and prevents nighttime leg cramps and charley horses ● Uses heat-generating and moisturizing Moist fiber, providing excellent warmth while gently moisturizing the skin ● Brushed interior. Stretches vertically and horizontally, fitting snugly without feeling constricting ● Open-toe design for breathability and comfort ● Recommended for those who frequently wake up to use the restroom at night, for warming activities, and for energy-saving measures New, unopened, but stored at home. Thank you for your understanding. Instant purchase OK. Shipping method may be changed from Rakuraku Mercari to Yuuyu Mercari without notice depending on the shipping timing.