This luxurious, 100% natural duvet is filled with high quality mulberry silk and finished by hand. Naturally hypoallergenic, temperature-regulating and breathable, it's blissfully cosy and light. 300 Thread Count This number refers to the density of threads per square inch: generally, higher thread counts mean a softer and smoother feel. Temperature Regulating Luxurious silk is naturally temperature regulating and breathable. It keeps the heat in when nights are cold, and lets it out when they're hot. 3D Pocket Construction This duvet is sewn to create evenly divided square boxes. This means the down, feather or mixed filling is evenly distributed, so you enjoy warmth without cold spots. Have you thought about a new pillow? Shop here.