There are several types of Hanten, popular type that you may have known are Shirushi Banten (which has shop name or family crest on) and Wataire Hanten (綿入れはんてん). Shirushi Banten usually made to order. Wataire Hanten is a thickly cotton padded (綿入れ) winter garment mainly for housecoat.
Wearing a coat indoor? Probably you maybe feel weird but it's offenseless, and it's super warm! If you have an experienced Futon (布団) Japan style bedding, imagine to wearing it! Maybe the warmest housecoat that you have ever had. Wear Wataire Hanten to lower your air conditoner temperature for reducing green house effect!
If you have interest of Wataire Hanten, you can buy direct from Japan here below on Rakuten Global and amazon.co.jp. If this is the first time to buy see “How to amazon.jp”, “How to Rakuten” on the right side. But maybe don’t need to because it is easy to do.
* Kurume Wataire Hanten is a popular handmade manufacturing brand.