Outside, the temperatures are dropping. Inside, what do you do? Turn up the heat — or stock up on cozy blankets and bedding, especially if they\’re made from natural fibers like organic cotton, wool, and hemp?

What makes these materials more environmentally friendly?

Natural fibers breathe more easily than synthetic fabrics, wicking away moisture if you sweat, and creating a layer of insulation when you generate your own body heat. Plus, organic and natural comforters and quilts do not contain \’finishing\’ chemicals like formaldehyde, a toxin that can irritate the skin, nose, eyes, and respiratory system (babies are especially sensitive). Plus, more environmentally-friendly covers will usually be colored with plant-based or low-impact dyes.

Some options:

Coyuchi environmental bedding is Fair Trade and made from 100 percent organic cotton, minus any solvents or resins.

Loop Organic provides a variety of hypoallergenic blankets and bedding that are also made with high quality organic cotton fibers free of toxic chemicals.

Sleep & Beyond makes classic organic comforters hand-filled with a USDA and WOOLMARK certified organic merino wool fiber called WoolGanique. The natural fiber allows the comforter to regulate and maintain stable body temperatures while keeping moisture away from your skin.

Dreamsacks/Bamboo Dreams blankets and bedding woven from organic bamboo fibers also adjust to your body temperature so they can be used year-round.

I\’ve also found organic cotton and bamboo sheets at various J.C. Penney\’s and Target stores. If you don\’t see them while you\’re shopping, ask the store manager to stock up.

Note: Bedding made from organic fibers is more expensive. You can afford it by saving money on energy when you turn down your thermostat. According to the Midwest Alliance, for every degree you lower your heat in the 60-degree to 70-degree range, you\’ll save up to 5 percent on heating costs!

Check out more home energy-saving tips and resources here

Diane MacEachern, the author of Big Green Purse: Use Your Spending Power to Create a Cleaner, Greener World, is passionate about empowering women to use their marketplace clout to protect the environment.