Duck down mattress enhancers are not as deep as mattress toppers but are designed add an finer extra layer of comfort to your mattress. Comprising  60% down for softness and 40% feather for support, they guarantee all-over comfort. The cassette stitched compartments ensure the filling stays in place so there are no uncomfortable 'cold spots'. It has a lovely 100% cotton cambric 233tc cover. Easy to fit with elasticated corner straps . All our feather & down products are ethically sourced and meet the highest standards of animal welfare. 60% duck down and 40% duck feather fill Cassette stitched 233 thread count cotton cambric cover Machine washable Elasticated corner straps for a secure fit Size: Single    90cm x 190cm Double  135cmx.190cm King     150cm x 200cm Superking  180cm x 200cm