Quick Answer. Cigars stay fresh without a humidor for up to a month when kept in their original wrapper. Cigars kept in a humidor can last for years in a properly controlled environment. A humidor keeps cigars from drying out and the oils from evaporating. Keep Learning.
Duvet and cover. A duvet is essentially a soft flat bag filled with down, feathers or a synthetic alternative. It is recommended that duvets are inserted into a removable cover, much like a pillow and pillow case. bedspread can be a quilt or a comforter & visa versa, but not always. It is any textile used as the outside layer on a bed (except for a small throw). They typically cover more of the bed than a typical blanket, quilt or comforter. Duvet & duvet cover definitions are fine.
Comforters are thick, filled blankets that usually have a decorative design printed on them directly. They are meant to be placed over bed linens. Duvets tend to be plain white and more thickly filled. They are intended to either replace a regular comforter altogether or to be an extra cover on top of a regular comforter. Removable and washable duvet covers can be purchased to add decoration to plain duvets and protect them from dirt.