Assuming everyone should have a raincoat, we could say everyone should have its one CAIÁGUA (the Portuguese expression for “water is falling”). These colourful waterproof jackets (please interpret the word “waterproof” at a literal level) are light, comfortable and functional. This model (86,8% PVC, 6,6% cotton, 6,6% polyester) has breathing holes under the arms and at the back (in the inside), an adjustment knob at the end of the sleeve and a hyper useful inside pocket for mobile phone and wallet (there’s room enough for both of them). And I guess that’s obvious… the yellow is one the most iconic colours in a model like this one (please note that Filipa's portraits are the ones that best describe the exact yellow tone of the jacket).
note: Filipa (1,74m, how impolite is to ask a lady for her weight?) is wearing a XS size Caiágua (please not a S would also fit her perfectly) and José (1,78m, 73kg) is wearing a M size Caiágua.