One item that will be a staple this spring is as simple as a shirt can get. The Polo Classic-Fit Pocket Tee is a great basic, and it feels kind of early-'90s twee, especially layered under a denim jacket. We're also always big advocates of T-shirts having pockets, but even more importantly, this spring, the time is right for long sleeved tees. Long sleeve t-shirts can be a tough sell on most guys, but actually, they're the best spring shirt. Great for layering under a plaid when it's a bit chilly, and fine on their own when it warms up, you can get a lot of use out of something really simple. It doesn't hurt that they're inexpensive enough that you can buy one in every color.