Goose down can cause allergic reactions in some people, however it is not the down that does this but rather the dust particles remaining on the down after washing and processing. Ogallala's Hypodown comforters and pillows are guaranteed to be hypoallergenic. This is accomplished by combining syriaca clusters (commonly known as milkweed) with the down. The syriaca clusters enhance the natural properties of the down as well as stabilize the components that cause people to suffer allergies from their down bedding.
Hypodown comes in different fill powers, which is the technical term for the space 1 ounce of down occupies in cubic inches. The higher the fill power, the better the clusters are at trapping air and keeping you warm. Higher fill power also gives you more warmth with a lighter weight comforter. Ogallala Hypodown comforters and pillows are available in fill powers: 600, 700 and 800 fill.