Not sold separately. DANTON 34 (S) WAVE UNION (M) Both have a flat measurement of 45cm for the width. Although the brands are different, the size notations differ, but the width and length are the same. The WAVE UNION item has some slight fading on the upper part. Please check the photos. Please refrain from purchasing if you are at all concerned. For me (size M), it felt a little small, so it was useful for wearing a neat, tight fit and layering with shirts, etc.