It´s here

[auld argonian]

Actually, I've worn a USAK casual on the odd winter's day and they're pretty warm under those conditions...not as warm as wool or even the Stillwater acrylic but I wasn't exactly suffering...I'd expect that the semi-trad would be warmer than the casual.

Best

AA

[RockyR]

The Semi Trad is warmer than the casual b/c it's got (on average) 2 more yards of material in it than the Casual.

Is PV good in the winter? depends on what you're used to and your conditions. It's NOT better than wool, but it is better than cotton or cotton poly. If it's the only kilt you have, then wear it in the winter! If you have a PV and an 8 yard wool, then the wool one will probably be your "standard kilt" for winter months.