A Guide to Beer Can Sizes, Why We Use Them, and What They're Called. Sure, maybe you enjoy a tallboy from time to time, but what else is out there?

A can of beer in a Yeti Colster (left) remained at its starting temperature of 46 °F significantly longer than an uninsulated can (right) that I placed right next to it in a sunny window.

They don’t let in sunlight or oxygen, which are both detrimental to beer,” says Rupp. “Bottles let in sunlight. Even brown or amber bottles allow a small percentage of ultraviolet rays through, which ...