The temperature at which a "standard man" (or warm sleeper) can sleep for eight hours in a curled position.
Temperature ratings are estimates and vary by person, but industry standards (ISO/EN) provide a baseline for comparison. how to buy a sleeping bag
Offers the best warmth-to-weight ratio and is highly compressible, making it ideal for backpacking. However, it is more expensive and loses its insulating properties if it gets wet, though "hydrophobic down" treatments can mitigate this. The temperature at which a "standard man" (or
Crucial for cold nights to trap heat escaping from your head. making it ideal for backpacking. However
Tapered for a body-hugging fit to maximize warmth and minimize weight. Best for backpacking.