I mean, I have clothes. Long underwear? Layers? Coats, gloves, hats, scarves?

They say you can always put on more clothes if you’re cold, but that’s not really true. Insulation adds bulk, and bulk reduces mobility. Around 0F is where I start to have real trouble wearing enough clothing to stay warm while still being able to perform the activity that has me outside in that weather. Somewhere around 0F, clothing doesn’t really cut it, and I need shelter or additional heat.