Thanks for the info, looking forward to giving the shirt its first wash

Hi all, new to this site, I was looking for a new denim shirt as I have always loved the hard wearing nature of them.

I bought my tonal shirt in mid Jan 25 and have worn the majority of the days since, I purchased slightly larger than I usually buy a shirt, but denim in my experience shrinks a fair bit over time, I have clothes in my wardrobe that are a good 20+ years old.

I am getting to the point where I want to wash the shirt, and will probably do so once I have completed my biking holiday later this month (determined not to take any other shirt) what the best tip for washing to reduce arm and body width, for a more fitted look.
This shirt is brilliant with the long sleeves when riding my old motorbike, keep looking for a dobby shirt next.