Marine Neroli is a 100 ml cologne built for warm weather: Italian lemon and bergamot up top, neroli and a salty marine accord in the middle, dry cedar and white musk underneath.
The concentration is light, so it feels fresh rather than heavy - the kind of scent you can reapply after the gym or before a lunch meeting without taking over the room. It is unisex, which also makes it a safe choice when you are buying for someone else.
Don't be sparing; a cologne is meant to be used freely. Two to four sprays on the chest and neck work well, and one spray on a shirt collar helps it last longer. Store the bottle somewhere cool and dark.