Product Features: Cover material: high-density 100% premium thermal microfiber; filling material: 50% charcoal-anion microfiber, 50% thermal fiber Anti-bacterial and anti-odour: charcoal can purify air to omit odours and give a fresh and comfortable environment Breathable: charcoal absorbs humidity and raises humidity when the air is dry; usable all-year round Silky soft: the smooth cover is strong and durable and is softer than cotton Deodorizer: effectively breaks down musty odours and other unpleasant smells Complies with various international safety standards: Obtained UK Thermal resistance BS EN ISO 9237 heat-insulating certificate; made with 450gsm super fine fibre to lock down warmth Passed the USA ASTM D1518 Air Permeability test for excellent permeability; effective in promoting blood circulation and creating a comfortable sleep Complies with Öko-Tex Standard 100; free of harmful substances Complies with HK Safety Mark, HKSGS and International SGS formaldehyde-free safety standard