New, unopened. Ketsuryu Kaizen (Blood Circulation Improvement) Clothes-Attachable Koshi Hotton (Lower Back Hot Pack) 5 pieces per pack, 2 packs. Heat therapy for cold relief. Disposable heat pack to relieve lower back pain and neuralgia with a warming effect of approximately 48 degrees Celsius. - Product Name: Painful Lower Back Pain, Neuralgia Koshi Hotton - Temperature: Approximately 48 degrees Celsius - Contents: 5 pieces x 2 - Made in Japan - How to use: Attach to clothing Expiration date: 2026.4 Although it is a new, unopened item, please understand that it has been stored at home. When shipping, we will take measures to prevent water damage and ship in simple packaging due to the thickness, so please be aware of this. Kobayashi Pharmaceutical Co., Ltd. Ketsuryu Kaizen Koshi Hotton 5 pieces x 2 Brand: Kobayashi Pharmaceutical