2020’s BEST SLEEPING BAGS
Fill power
This is directly related to the warmth and weight of a sleeping bag. The higher the fill power (FP), the more air – and hence warmth – an ounce of down can trap. A high number also suggests the bag will be lighter – because less down is needed to keep the user warm. It’ll also be more expensive because the down is of the highest quality. Sleeping bags typically have a fill power of between 500 and 900.
DOWN INSULATION
Water-resistant or hydrophobic down is common and promises to insulate in wet conditions, or at least dry more quickly than untreated down (wet down clumps together and cannot loft, losing its ability to insulate). All down is compressible and lightweight, with goose down being of higher quality than duck down. Cheaper down bags will also use feathers in their insulation. The proportion of feathers to down is expressed as a percentage – e.g.: 90/10 goose down, with the lower number representing the percentage of insulation that is feathers.
Hood
Multi-baffled, anatomically-shaped hoods enclose the head and
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