Most summer climates aren't immune to the occasional cool morning, chilly evening or breezy oceanside afternoon, which is where casual lightweight sweaters come in. The benefits of melange sweaters are many: the visually interesting texture is probably all the pattern your outfit needs; classic combinations of neutral colours go with just about anything; and the irregular knit makes these things easy to wear—if they get stretched out, snagged or pulled, nobody will even notice. In fact they might look even better that way. Adds some character and sprezz. Left: Suitsupply linen v-neck [$129]. Right: H&M organic cotton boatneck [$30].