The circulation of air through the breathable gusset of the pillow creates the ideal conditions for a perfect healthy nights sleep. Box sided giving firm support and comfort. Adapts to every sleeping position. Filling: Luxury bounce back spiral fibre. Casing: Luxury woven jacquard. Satin piped gold edges. Non allergenic. Machine washable. Made in UK. BS 5852. Part 2 Fire & Safety regulations 1998.