[sebbie]

Adidas no longer sells briefs in the US in any color. In my collection I have many 3-stripe black ones I got in a closeout at an off-price retailer, plus a bright violet one I got at another off-price retailer with white stripes too. I also have a solid red Adidas suit (no stripes but embroidered logo) with the word "Adidas" in black outline font across the butt. These were all purchased 3-5 years ago

You might continue to find used/vintage suits on ebay or in Europe, but you are not going to find them currently at US retailers.