Chris,

this is from the SWK website:


Our Economy and Standard kilts are made from acrylic fabric.

Wool is simply not a viable option for the price we offer these kilts for, and the cotton/poly blends often used on kilts in this price range do not hold pleats nearly as well. We have had very good results with our fabric choice, it feels like wool, without the cost! They are machine-washable (gentle cycle only), hang dry, touch up with a warm iron if needed. Dry clean for best results.

Our Heavyweight Kilts are 100% Wool (dry-clean only)

MrBill