I wear a xxl T-shirt so I take a XL or large t-shirt and cut off the neck and Sendai it's a tube of cloth. Then I put it on like a shirt but I slide it down over my kilt. That holds it in place during a long drive. I usually just take my sporran off.

I would like to ask the rabble a related question. Does YOUR kilt really just give up the wrinkles? I went to loon NH to the highland games. It's a 3 and a half hour drive away from my home. I had wrinkles in my kilt. I hung up the kilt when I got home and went to bed. Two days later I took a look at it and the wrinkles were still there. I always have to steam my kilts to get the wrinkles out.

I just don't buy into the entire "the wrinkles just melt away" story.