A balanced micro-climate is essential for a good night's sleep. Overnight we all experience changes in body temperature which can, at times, lead to perspiration or night-sweats of up to an average of 0.5 litres per night. Suprelle FRESH's special hollow structure provides improved air circulation and helps prevent humidity build-up to create a pleasant micro-climate. It is breathable, quick drying, and warm. The Tencel fibre extracted from the eucalyptus wood, uses nanofibrils to absorb excess humidity, and is extremely fine, soft, and natural to touch. The 10.5 tog is suitable for autumn weather and even through winter in a well-insulated bedroom.