Bamboo sheets are all about silky soft comfort and breathability. Our Mulberry silk duvets and Hutterite white goose down duvets were chosen because of their extraordinary lightness, insulating properties and breathability. The mission was to provide warmth without compromising the wonderful breathability and comfort of our bamboo bedding. The Mulberry silk duvets are perfect for four season comfort. For greater warmth our Hutterite white goose down duvets are the correct choice.