Transitional dressing can be a tricky thing to master. Obsessively checking weather.com and fretfully peering out the window will come in waves. This season, meet the wacky weather forecasts with some straight-up preparation. When it's too hot for a winter coat but too chilly for short sleeves, the cotton sweater fits the bill perfectly. Soft and cozy––and easier to maintain than its wool counterparts––cotton is going to be your best pal this spring. Click through for 10 of our favorites.