It's unlikely that a heat wave hit our country this season, but from now until December anything can happen. Should it happen it would not hurt a bit 'of fresh air, like that generated by Handy Cooler. This is a pocket-sized device capable of generating fresh air, so do not simply move to create wind, but cold.
Large 177.8 x 88.9 x 50.8 mm, can be powered by batteries or simply connected to the USB port of your computer. You buy in the store for $ 39.99, equivalent to about 27 €.
