Okamoto Socks Supplement Like a Kotatsu, Sleep Switch 2-Pair Set Size: 22-25cm Colors: Black, Lavender Materials: Acrylic, Wool, Others Purchased early November 2025 New and Unopened Warms the entire foot by covering the soles of the feet, where blood vessels are concentrated, and the open-toe design releases excess heat. Furthermore, it provides thermal stimulation to the acupressure points on the heels! Recommended for those who "can't sleep because their feet are cold." ● Size 22-25cm Retail Price: ¥3,500 (tax included) x 2