Great thread!!! This is something I've been wondering about myself.

It just so happens that I was talking to a gentleman at the Sumter Scottish fair this year about this very thing. I told him how at the Charleston Highland games (held in September) I wore my one of my 13 oz tanks and just about had a heat stroke. On the other hand, the Sumter fair was in March and I was glad to have a 16 oz tank on that day. The man I was speaking to was one of the venders (I can't remember the name of the store) but he told me that the 16 oz kilts are actually cooler thatn the 13 oz. His reasoning was that because the yarn was thicker the weave was not as tight and it breathes better. I'll be testing this theory out this summer now that I have 16 and 13 oz kilts to compare.

Has anyone else ever heard of or experienced this?

-80s