Hello, I recently saw some handkerchiefs on sale on the internet I rather liked. They were by Westwood or McQueen but I do not remember. Apparently they stated them as "bandana/handkerchief, and the measurements were 20 inches. Are these too large for pocket squares et al? All my pocket squares are usually silk, and 12 to 15". I really don't want to buy them, and find them unsuitable. Thank you.