Keep updated on the useful made in Japan goods!

by IWATA Inc.

Keep your feet warm while sleeping.

Cold feet in bed?

If you’ve ever had cold feet in bed, you’ll be familiar with this dilemma: Do you count sheep and hopefully fall asleep anyway, or do you get-up, put-on a pair of socks and wake-up later with sweaty feet? Specially developed to keep your feet warm and cozy while you sleep, IWATA Down Socks are created with 100% natural materials. Shells of undecorated pure cotton gently grip the ankle, while lightweight duck-down filling prevents unpleasant moisture accumulation.

Uses selected down that has cleared strict quality standards

The feel of down products depends on the maturity of the down, not the down rate. The maturity of down is determined by the size of each down ball. Mature down has a large number of hairs, which makes it a large down ball and has high heat retention. On the other hand, immature down has low heat retention and is not comfortable to sleep on. IWATA uses only down that has cleared strict quality standards.

Ionization technology that enhances cleanliness allows washing with water

Conventional feather products could not be washed with water due to the risk of mold and odor. IWATA solves that problem with its unique ionization special technology. It can be easily washed with water at home and sterilized by sun-drying,

International standards

Eco-Tex is an international testing and certification system for screening harmful substances in textile products. Each IWATA product carries Eco-Tex certification. From fill materials to shell fabrics, threads to fasteners, every component is tested for purity and safety.

World’s leading sleep specialists

Over the 180 years IWATA Inc. has been creating bedding, the company has developed and patented innovations in many areas such as down purification, fiber activation, and manufacturing optimization. Pioneers in the field of ‘sleep’ research, the company's unique technical knowhow is reflected in its simple, efficient and ecological designs.

Stringent in-house standards

While IWATA Inc. is certified ISO9001 (international quality management system) at both its factories and laboratory, the company’s own stringent quality control enables them to confidently use completely natural materials and chemical free, natural processing to create safe, reliable, high-performance bedding.

Product Details

Selling Agency Japan
  • Country of origin: Japan
  • Material: Fill-White Duck-down 80% / Shell-Plain woven cotton 100%
  • Size: Medium (M) 21-24.5cm (8.27-9.65 in)/ Large (L) 24.5-28cm(9.65-11.02 in)
  • Weight: Medium (M)130g(4.6oz) / Large (L)140g(4.9oz)

・All the products handling in ALEXCIOUS are the genuine products from the original makers.
・The colors in the product photos may differ slightly from the actual product.
・The design, specifications, appearance, and price of products are subject to change without notice.

Washable Down Socks


¥ 15,060
Approx. USD 100.53

Shipping Fee

¥ 5,200
(Approx. USD 34.71)
Gift wrapping available
  • M - 24.5cm


    ¥ 15,060
    Domestic: Delivery in 6-7 business days.
    Overseas: It takes a few more days.
  • L 24.5cm - 28.0cm


    ¥ 15,060
    Domestic: Delivery in 6-7 business days.
    Overseas: It takes a few more days.

Contact us


Guide for Ordering Procedures

Order Procedures

  1. 1
    Placing an Order

    Orders can be made anytime.

  2. 2
    Confirmation Mail

    An automated mail will be delivered from ALEXCIOUS after an order has been placed.

  3. 3
    Approximate Shipping Date Mail

    For products that may take up to more than the period of notation to dispatch, another mail will be sent to notify the approximate shipping date in 1-3 business days

  4. 4
    Shipment Confirmation Mail

    A confirmation mail will be sent with the voucher number that indicates that the product has been shipped.

  5. 5
    Arrival of the Product

    After the order has been delivered, we request that you kindly rate our product on the review page.

Delivery and Wrapping

Shipping Method Delivery within Japan: Sagawa Express, Delivery Overseas: Express Mail Service (EMS) via the Japan Post Service
Shipping Fee
¥ 1,100
Estimated Delivery Date
Domestic delivery usually takes 1-3 days after the order is shipped.
For international delivery, delivery time can be estimated based on that of EMS (International Express Mail Service) once the order is shipped.Check the delivery time here.
Ship from Shinagawa-ku, Tokyo
Sagawa Express Tracking Info Site
EMS Tracking Info Site
Insurance Included
Wrapping Message card (+ 110JPY / texts can be personalized) and gift wrapping (+ 550JPY) options are available. (Gift wrapping materials may be different from the image due to the size or shape of the product.)

Payment Method

Customers inside Japan
Square (no handling fees)
  • VISA
  • Master Card
  • American Express
PayPal (no handling fees)
  • VISA
  • Master Card
  • JCB
  • American Express
ATM (no handling fees)
Convenience stores (no handling fees)
  • FamilyMart
  • Daily Yamazaki
Online banking (no handling fees)
Cash-on-delivery (COD)

(For domestic shipping and wristwatch purchases only)
For those who would like to pay via cash-on-delivery (COD), please select the ATM option. Then, please specify the COD option and the desired date of delivery (excluding weekends, the date can be no sooner than 4 days after the order) on the information form below. Cash-on-delivery Option/ Service Fees

Less than JPY 10,000
JPY 300
JPY 10,000 or above ~ less than JPY 30,000
JPY 400
JPY 30,000 or above ~ less than JPY 100,000
JPY 600
JPY 100,000 or above ~ less than JPY 300,000
JPY 1000
Customers outside Japan
Square (no handling fees)
  • VISA
  • Master Card
  • American Express
PayPal (no handling fees)
  • VISA
  • Master Card
  • JCB
  • American Express
Kindly notes If you view our site in Japanese, you may choose any one of the payment methods above. If you view our site in other languages including English, you may only make your payment with Square or PayPal.