Concept and design
Is it spelled Insolation or Insulation? What even is Insolation?!
...insulation v insolation does it keep you warm or warm you up?
Different places, different needs for insulation and insolation
The way you handle insulation and insolation really depends on where you live:
Northern areas need to:
Make the most of winter sun (that's insolation)
Pack in plenty of insulation to keep warm...
