Depends which kind of material you want. Like a knit one hole mask (like Steve Stepp) you can get those for like five bucks on Amazon. Facetube definitely Outdoor Tech Yowies/Arctic Yowies for like $10. But a stretchy poly balaclava is definitely most expensive. I'd say the Under Armour Cold Gear hood. It's like 25 bucks but it can be both a full face mask or fold the hood down and make it a tube.