Go for a white long sleeve shirt and white and blue vertical striped chinos if you seek to look casually cool without making too much effort. For a more relaxed feel, why not complement your getup with a pair of red athletic shoes? Like this style idea for an over-30 gentleman?
Red Athletic Shoes with White and Blue Vertical Striped Chinos Warm Weather Outfits In Their 30s
If you gravitate towards casual style, why not consider this combo of a white long sleeve shirt and white and blue vertical striped chinos? For something more on the casually edgy side to finish your outfit, complement your outfit with red athletic shoes. If you frequently wonder how to dress maturely, this combination is a foolproof option.