A heavy weight kilt should be 17 oz I would think, but I can't say for sure about SWK's models.

I do know that my own 13 oz handmade got hot in Savannah, but I had on think hose. since then, I bought some knee socks on ebay which were supposedly from some tropical clime where the police wear them. It makes all the difference in the heat.

But, as stated, look for shade and hydrate. And get a little draft occassionally, even if you have to flap the pleats.