Choose one of these solid flannel sets (from $17; target.com) in sophisticated colors, like indigo, white, and soft blush. And if you really can’t bear to part with cotton bedding, opt for twill sheets, like anelegant set from Brooklinen (from $189; brooklinen.com), which is woven from long-staple cotton but was made for cold winter nights. RELATED: How to Choose the Best Bed Sheets Also, consider the fill power, or the amount of space one ounce of down takes up. In general, the higher the fill power, the fluffier the down duvet, and the greater its ability to insulate. Visit Parachute Home for a more in-depth explainer, and to shop their 750 fill-power duvets. If you’re going for the rustic winter cabin look, a faux fur throw (from $179; potterybarn.com) is the perfect topper. But for the ultimate in sweater-weather luxury, nothing beats a chunky hand-knit blanket. You can find them on Etsy (like a chunky knit blanket, $150), or try your hand at knitting your own. Bonus: It won’t require leaving your bed.