Quick Answer
Mylar and Space Blankets provide similar warmth, but Mylar is more durable and can retain heat better, making it a better choice for emergency warmth in cold and wet conditions.
Mylar vs Space Blankets: Durability and Heat Retention
When comparing Mylar and Space Blankets for warmth, durability and heat retention are key factors. Mylar, made of a thin, reflective material, is more resistant to wind, rain, and extreme temperatures than Space Blankets. In tests, Mylar has been shown to retain heat for up to 90 minutes in temperatures as low as -20°F (-29°C), while Space Blankets typically only retain heat for 30-60 minutes.
Choosing the Right Mylar for Emergency Warmth
Not all Mylar is created equal, and choosing the right type is crucial for emergency warmth. Look for Mylar with a thickness of 0.5-1.5 mils (0.0127-0.0381 mm) and a silver-coated surface. This will provide the best balance of heat retention and durability. Additionally, consider a Mylar bivy sack or blanket with a waterproof and wind-resistant outer layer to protect the user from the elements.
Using Mylar for Emergency Warmth
When using Mylar for emergency warmth, it’s essential to follow proper technique. First, dry off any wet clothing and remove any wet layers to prevent heat loss. Next, wrap the Mylar blanket or bivy sack around your body, making sure to cover your head and neck to retain heat. Finally, use a space blanket or emergency bivvy sack to add additional warmth and protection from the elements.
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