A separating zipper in the same length as the front of your hoodie, or longer. My Lifehacker hoodie was 25.5 inches from neckline to bottom, so I bought a 26-inch zipper like this one for about $4.

One PS editor tries the bestselling Lululemon Scuba Oversized Half-Zip Hoodie to see if it’s worth the hype. It's soft, breathable, and flattering.

Jermikko also stated that like denim and baseball caps, hoodies are timeless. As someone who wears hoodies on a pretty much daily basis during cold months, I cannot disagree.