CUSTOM MADE by GALLARDO, SPAIN, the best and most famous flamenco shoemaker , womens sizes 6 1/2  medium US.  They are available in:    GREEN,  DARK RED,   BLACK with laces, BLACK with elastic strap.  I was a professional flamenco dancer and they were custom made for me, I only used them in concerts to match my dressses.  They are all in my favorite style:  SUEDE with 2 1/2"  (6 cm) heels, with rubber anti slip sole , nails in heel and tip of toes, and elastic strap.