[Request] Looking for good lightweight men's robe pattern

Hello folks!

I'm finally close to finishing up some home projects and am going to try breaking out the old Singer 99k for some summer clothing as it's starting to warm up here in California. Something that I've wanted for ages but haven't found reasonably priced is a summer weight robe for around the house.

I'm leaning towards a linen or cotton-linen blend for airiness and cost-effectiveness but am open to other recommendations. I'm generally not a huge fan of waffle weave but could see utility in the back and seat to promote airflow.

So, the main question is: Anyone have recommendations for a good pattern (doesn't need to be free - professional pattern designers deserve to make a living) for a men's or unisex robe that would fit the bill and be possible with a straight stitch machine (I didn't yet have a zigzagger)?