Silk contains sericin, which is mite-resistant. Unlike other natural bedding materials (particularly down, feathers and wool), silk will not harbour these mites.
Therefore, silk-filled duvets are naturally hypoallergenic - perfect for those with allergies.
Silk filaments have 33%-38% of space in structure, which can keep air and moisture in or out, depending on weather conditions.
In hot weather, silk can absorb and transfer extra heat and moisture and thus keep a comfortable sleeping environment. In cold weather, because of the air in the structure of the silk filaments, the duvet is insulated so that the heat inside is not lost.
In this way, the silk filled duvet is able to “breathe”. It can create the unique “warm in winter, cool in summer” effect for which it is renowned.