ヒートラブウールシルク発売 - ZEROFIT公式サイト

The best warmth of the HEATRUB series, HEATRUB wool has been renewed with silk added. "HEATRUB Wool Silk" will be released on November 1st.
Silk is added to a base of natural merino wool for smooth comfort. Since silk is composed of amino acids (the main component of collagen) that are similar to human skin, it is ideal for underwear. The warmth is almost the same as HEATRUB wool. For those who say, " I know wool is warm, but it irritates my underwear ...", please try it.

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