Add a little luxury to your bed with our Natural Anti-Allergy 5cm Deep Milled Duck Feather topper, covered in a smooth 233 thread count downproof microfibre piped casing and fitted with 4 strong corner elastic straps to hold the topper firmly in place. Milling is a process where the feathers are gently crushed to give the softness of down. - The Linen Consultancy 'TLC 5 Star Hotel Concept' Softened Duck Feather 5cm Mattress Topper in White - Size: Double