I normally wear 11oz 7yd PV casual kilts for practice sessions and I find these are very comfortable and have very good swing. I don't find myself getting very hot but since they are easily washable the odd drop of sweat can be dealt with. Very few of our male members wear a kilt to practice classes but I'd much rather dance in a kilt than in trousers so I take the comfortable option every time.
For balls and dances and demos I normally wear full 16oz 8yd wool kilts but since I got a 13oz 8yd wool kilt in one of my own clan tartans last year I am finding that it is getting more outings than the heavier ones. So even here my own comfort is probably winning out over tradition etc..
So my advice is to find out what you are comfortable dancing in and wear that.












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