A good quality alternative down comforter will provide warmth and be allergy free. Although when most people say they are allergic to down comforters, they are actually allergic to the dust and dirt from an improperly cleaned comforter. Regardless of preference a down alternative comforter will do the trick. These type of comforters are perfectly fine when used alone but to ensure its long life a duvet cover should be used to encase the down alternative comforter. Not only will this protect the comforter from dirt and impurities, it will also allow you to introduce change, color and style into your bedroom.