“Onsen Walker Premium HADAKIWAMI®” is an innerwear product provided by HEALTHYA Co., LTD., based on the philosophy of “supporting health from within.” This product is designed to provide warmth and comfort, as if soaking in a hot spring. The secret to its warmth lies in the moisture-absorbing and heat-generating material, which was developed through two years of joint research with TOYOBO. It features a unique blend of soft and voluminous special yarn. Additionally, a brushed inner lining enhances both skin comfort and heat retention. For improved comfort, the fabric is made using a tubular knitting process, tailored to body size. This results in a side-seamless design, reducing bulkiness from seams. With these innovations, “Onsen Walker Premium HADAKIWAMI®” delivers the ultimate cozy innerwear experience, mimicking the warmth of a hot spring.

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