When To Replace Your Feather Bed? By: DOWNLITE | - Feather beds offer a soft bed experience unmatched by pillow top beds, memory foam beds and all kinds of top of bed solutions. The primary ingredient in featherbeds is a blend of feathers and down. The more down in the mixture the softer the featherbed will feel. The best featherbed on the market right now uses a 50/50 blend of filling but that is the exception with most being a 5/95 blend (5% down, 95% feathers).