About this product: Socks from the Kotatsu-style Socks series that warm your body from the feet up. By using a special material to provide thermal stimulation to the "Sanyōkō" acupressure point on the ankle, you'll feel warm from the inside out. You'll be enveloped in warmth, just like a kotatsu (heated table). *Box not included. [For combating air conditioning in the summer and cold floors in the winter] Great for use in situations where your feet tend to get cold, such as desk work in the office, telework, standing work, and while doing housework on cold flooring. Warm materials wrap around from your calves to your toes, making these socks recommended for those who feel the cold easily. [Recommended as a present or gift] These socks are chosen as gifts for family, friends, and loved ones who suffer from cold feet. For birthdays, Mother's Day, Respect for the Aged Day, Christmas... and of course, as a reward for yourself. Give the warmth of "Like a Kotatsu" to that special someone, or to yourself. ☆When washing, use a laundry net and wash with a neutral detergent. Also, the materials used are excellent at retaining heat, but they are prone to pilling due to friction from wearing and washing. ☆In that case, please use a pilling remover to care for them. ☆Size: 23-25cm (for women) ☆Material composition: Acrylic, wool, other ☆Description [Simply, warm.] With a unique knitting method, these socks warm the Sanyōkō acupressure point on the ankle, which protects against cold, and keep your toes warm. Furthermore, we have achieved warmer socks than ever before by using Okamoto's uniquely developed special heat-retaining and heat-generating material. ☆The "necks" of the body, such as the ankles, wrists, and neck, are points where blood flows intensively. ☆When these points get cold, cold blood flows through the body, leading to overall body chill. ☆The secret to protecting your body from the cold is in the "necks." For those who... ◎Want to relax ◎Have cold feet while sleeping ◎Find cold flooring difficult