Every winter morning, while changing clothes, I always place a self-adhesive Hokkairo on my lower back. When I step out, I carry at least one or two with me. In fact, running out of Hokkairo is unthinkable – I'd simply stop by a convenience store to replenish my supply.
This little warming patch is an indispensable part of my winter survival kit. However, until recently, I hadn't delved into its history.
I discovered that the first Hokkairo was introduced in Japan in 1975. Interestingly, its roots can be traced back to "Onjyaku," a traditional practice in the Edo period where hot stones were placed inside kimonos for warmth. Today, Hokkairo has firmly established itself as a winter essential in Japan.

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