Okay, so it seems like spring is actually coming. We've had a few false starts (i.e. the entire winter), but now March is upon us and it's only a matter of time before we're breaking out those bathing suits. Just kidding, I won't be because I hate swimming. I will be breaking out my … cutoffs. Anyway, we've come to that sort of in-between stage where it isn't truly warm yet you're still sweating in your peacoat after a few blocks. This is where lightweight outerwear comes in. You can add hefty layers beneath it for warmth on cooler days or boil it down to just a T-shirt on warmer ones. Airy jackets were made for this purpose: the piece should casually wink at early springtime, but it shouldn't make things traumatic should you get caught in serendipitous downpour (no silk!). Without further ado, here's my roundup of seven buoyant layers perfectly suited for this transitional time.