Take time to research types of non-foam mattress toppers. Cotton and cotton-blends are the most economical. Wool and silk are appreciated for their breathable properties. Organic cotton is preferred by those looking to avoid chemicals. Feather, down, and synthetic down (also called "feather beds") are thick, fluffy and cozy, and come with the highest price tag.
If you have small children or pets that share the bed, consider a thinner topper that fits in the washing machine, over one that can only be spot- or dry-cleaned. If you have allergies, look for a mattress topper that has hypoallergenic properties or repels dust mites.
Decide how thick you want your mattress topper to be. They typically range in thickness from 2 inches to 6 inches. Feather beds can be much thicker. Keep in mind that all fabric and feather mattress toppers compress with time and use.
Choose the mattress topper's size, such as full, queen and king. Your topper should be the same size as your mattress for the best fit.
Decide how much you want to spend. Prices range from around $40 to over $900 for high-end down toppers. Factor in delivery costs, or shipping costs, if ordering on-line.
Shop for your mattress topper in store or on-line; those made of cotton or cotton-blend fabrics are easy to find in stores. Organic cotton, silk, wool, other specialty fibers, down, and feather are more difficult to find in stores, but are available from on-line retailers.