Fire Retardant Quilt/Duvet Cover (BS7-175 Crib7)(Blue, Single Size) has the following specifications Fire Retardant Bedding (Certified BS7-175, Crib 7) The Polyester used for this bedding is inherently Fire Retardant. In other words, it remains fire retardant throughout its lifetime. The Fire Retardant qualities are not sprayed on. They are built into the fabric during the manufacturing process - and are permanent. This is why they are so expensive in comparison to non fire-retardant bedding and why they are used in institutions. Cotton/Poly-Cotton and some cheaper Polyester types of bedding, are only Fire-Retardant on a temporary basis, they are sprayed to make them Fire Retardant (for a short while). The spray washes out completely in 4-5 washes, making them non Fire Retardant after a matter of days/weeks. 100% Polyester Quilt / Duvet Cover Sizes (All sizes) Standard UK sizes Single Bed Size - 3 Foot / 91cm x 198cm / 3' x 6'4" Double Bed Size - 4 Foot 6 inch / 137c...