After the first heat wave, coats and wool pullovers are shoved to the back of the closet next to the Christmas sweaters in favor of shorts, tanks, and shades. But summer has it's fair share of thunderstorms and chilly nights that call for light layers. So keep a summer sweater handy. Often made in cotton or linen, this article is designed to cut the chill while still allowing room to breathe. Here, we took four classic sweater styles – the crewneck, v-neck, Raglan, and nautical – and found summertime versions that won't make you sweat.