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To keep it simple, here’s a guide to One Planet references. Loft: a measure of how efficiently the down traps air. The higher the loft, the ‘fluffier’ the down and the better the insulating power. Composition: the ratio of down to feather in a bag, given as a percentage. For example, 90 per cent down, ten per cent feather. Species: goose down generally achieves better loft than duck, with the best down coming from mature, free-range birds from extremely cold climates.
All down used in One Planet products is independently tested by the IDFL (International Down and Feather Laboratory and Institute) for loft, composition, species and cleanliness. Our test results are accurately recorded on the quality label inside the foot of each sleeping bag. (Please note: traces of down and or feather of different species and colour than that noted on the bag may occur.) One Planet sleeping bags use four qualities of down. Duck – 700+ loft Duck – 750+ loft Goose – 800+ loft Goose – 850+ loft Fill ratio Most people move in their sleep, so loading the top of the bag with lots of extra down isn’t necessarily effective. We use a fill ratio of approximately 55/45, with 55 per cent of the fill in the top of the bag where it provides maximum warmth. Filled to order
One Planet sleeping bags are hand-filled, to order, in our Melbourne factory. This dramatically reduces the time a bag is spent compressed in its stuff sack.
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The quality of down in a sleeping bag makes a huge difference to the performance of the bag, in terms of warmth, weight, durability and compactness. However, often there is very little information provided about a bag’s fill, making it very hard to compare.