For really cold days, a good fleece can come in handy. The material is extremely warm, and is as functional as a piece of clothing can get. Though outdoor brands like Patagonia have many iconic fleeces up their sleeves, a lot of skateboard brands are showing up with retro-inspired fleeces that are just as durable as Patagonia's. A fleece provides excellent insulation and protection against the blistery cold weather, whether you're layering up or braving the cold as is.