Downa 15/85 Mattress Pad is Designed to Bring the Healthy Texture and Unique Comfort of Goose Down to Your Bed. Inside of Downa 15/85 Mattress Pad is 4.212 Grams. Filled with 15% Goose Feather. The feather ratio has been specially selected to ensure that the mattress pad does not crush under your body and provides you with the necessary support. Your bed is fixed with crossed rubber edges. Thanks to the hygroscopic and anti-sweating properties of goose down, it can be used in summer and winter. The fabric is 100% cotton with Nomite feature and feather-proof. Nomite Certificate Guarantees It Is Suitable For People With Dust Mite And House Dust Allergies. You can choose according to the exact size of your bed.