Sinela black leather knee high/over the knee boots

Black leather boots with fashionable silver tone faux zipper detail on the outer side. 3/4 zipper on the inner legs. Size 41, I am a size 10 and they fit well. Convertible from over the knee to knee high by folding over the top. Pointed toe, 1 5/8” heel. Leather upper, inner and sole. Made in Spain. I bought them in Paris. Excellent condition, worn once.