Review on 🏃 Leberna Emergency Blankets for Marathon Runners by Balthazar Cooper

I installed it as a reflective wall in an unheated guest house. I thought they effectively reinforce the work of the oil heater and return heat to the occupants of the small cabin. However, there was no heat improvement with them even though we lined the entire wall with them and placed the heater within 1 meter of the wall. As other reviewers have reported, the material is very thin and brittle, and noisy/crunching. It's best used, at least as stationery, I think. I wouldn't want to rely on that to stay warm in an emergency.