How to Compare Winter Jackets on an OOTDBuy Spreadsheet

Decide which layer you are shopping for

A fleece usually serves as an insulating middle layer. A shell is the layer that protects against the weather, and an insulated jacket adds warmth. For a windy commute, note which wind or rain protection you already own. If you need room under a shell, compare the jacket’s bulk and cut with the layers you plan to wear.

Compare the numbers on the same basis

Fill power describes how much a given amount of down lofts. Fill weight describes how much down is in the jacket. In an illustrative comparison, a 700-fill jacket with 140 g of down contains more down than a 700-fill jacket with 80 g. Overall warmth still depends on the construction, coverage, and conditions. Ask which size the weight refers to and whether the number describes the fill or the entire jacket.

For a seller listing with no specifications, write down the gaps before buying. Ask for the material label or a product specification that applies to the exact option. A photo can help you identify the design, while the insulation type, amount, and weather performance need their own evidence.