Birthday gift - Casual cycling shirt?

My partner mentioned that you can buy shirts that are designed to be worn on a bike or while exercising (eg I think they wick sweat away) but that look more like a nice, normal shirt. This wouldn’t be for a serious road ride but eg a cross country couple of hours ride with our little boy in the bike trailer. Eg on our last ride he wore his maap bib shorts and a patterned short sleeved cotton shirt on top, unbuttoned. I’m looking for a birthday gift for him and wondering if anyone knows of such a thing and if so where I might find it 🙏🏽