This Pith Helmet was purchased new from a re-enactment market, and is ideal for any explorer character.
I have photographed this one with me as steam punk type adventurer complete with my steam punked rifle.
Pith Helmets are designed for humid climates, they are light weight and practical.
They include ventilation in crown via simple holes
The top button is also designed to allow ventilation as can been seen from the photo above and photo below taken from inside the helmet showing where the button bolts on to the helmet.
Another feature is the chin strap which most of time forms a decorative feature on the brim, but when windy can be brought down and fasten under the chin.
The hat is covered with cotton and includes a adjustable lining which forms a sweat band.