Things that might make you more comfortable at summer Comiket.

Hanoke-chun, I'll wipe you.

Eeh- I can wipe myself.

Towelettes

chillychika~

Half-frozen drinks

Replenish frequently with water.

Fan

Because it's really humid...

Soaking them with water to make them moist might be good.

Cools down wherever you put them. I think it feels nice.

Cold packs