Noren icons..
usually, you can see the "ゆ(yu)" noren at he entrance of japanese hot springs or public bath.
this NOREN's colour, red - or,,,kind of warm color - means
"Women Only"- and boys under 10? or12?,, it depends..
and dark blue - called "KON" in japan - means
"Men Only".
contents: 4png (512, 256, 128, 64) and GIF.
preview is jpeg image but the file you download contains gif animation. have a look.