What warmth class does a 4-season duvet have?
The summer part is usually warmth class 4, the spring and autumn part class 3. Combined, they reach class 1, the warmest class. The lower the number, the warmer the duvet.
The summer part is usually warmth class 4, the spring and autumn part class 3. Combined, they reach class 1, the warmest class. The lower the number, the warmer the duvet.