the asterisk on Pg. 9 / 12 makes it seem that a translator's note is missing. i couldn't find anything in Japanese for "peta" (maybe it's a brand?), but found that these cooling patches are called 冷却ジェルシート (Reikyaku jerushīto), "cooling gel sheet"
edit: ahh, the translator's note is on the last page after the credits, my bad