Feather-bed mattress tops fit onto the top of the mattress and sit under the fitted sheet. They are composed of feathers, or a combination of feathers and down, and sewn onto a cover that fits on top of the mattress.
Feather-bed mattress tops are sold in sizes corresponding to the standard mattress sizes: twin, full, queen or king.
Measuring the quality of the feathers in a mattress top is done by fill power. The higher the number of the fill power, the better quality the feathers or down are considered.
Adding a feather mattress top to your bed provides an extra layer of cushion. If your mattress feels too firm, a feather mattress top can be a good solution.
Feathers provide insulation and will keep you warm. A feather-bed mattress top is an excellent way to make your bed warmer in winter months.
You can use a feather duvet insert on your bed to mimic the feel of a feather bed mattress top by placing it between the mattress and the fitted sheet.