Silk weight has to be taken as a reference for silk duvet cover shopping and also for silk comforters. Most silk comforter manufacturers have at least two weights of comforters available; one that is more suitable for summer use and a heavier one more suitable for cooler weather. In climates where the weather gets extremely cold it is suggested to use the summer weight and heavier weight comforter together to ensure you will be comfy and cozy no matter what the weather is. However, some cot silk pillowcase manufacturers do offer an extra warm silk comforter for extremely cold sweather use. As a general rule, summer weight comforters are 4 -5 pounds; fall weight are 6-10 pounds; and anything 11 pounds or over is for winter weather. When you shop for your silk blankets baby , this should be considered exactly!