A new costume for this year at Sakuracon, Sans is absolutely the best when it comes to being comfortable! His head features a fan in the nose-hole and a light in the left eye, both from Dream Vision Creations. He's built the same way all of my fursuits are, with green foam covered in fabric (in this case, fleece). His eyes are mesh with a plastic outer rim, set into the head about an inch and a half to give his pupils a following illusion. Vision is pretty decent, and as long as the fan has a fresh battery, it doesn't get terribly hot. The clothes are all store-bought, because much like Sans, I'm pretty lazy. But I put a skele-ton of work into the head, so that makes up for it, right?

I'm going to ditch the black skeleton morphsuit for white leggings and gloves painted myself with skeleton-y bits. I think it will look nicer than the white-on-black that's currently happening.
This photo is from the Sakuracon photobooth.