Duvets are usually thicker, heavier, and warmer than comforters because of the fill materials used and how often you fluff them. The loft (fluffiness) is affected by the type of fill material and how frequently you fluff it, while both the fill and cover materials can influence the warmth. Comforters are typically thinner than duvets since they’re not filled with as much material, so they tend to be less warm.
Fact
A tarantula spider can survive for more than two years without food.