İt Has Hygroscopic Feature. İt İs A Heat And Moisture Stabilizer. İt Absorbs The Moisture İn The Environment And Leaves İt Back When Not İn Use. İt İs The Lightest Filling Material. Natural Lint-Free Pillow With Soft And Medium Edges. Outer Fabric: 100% Cotton Fabric. İdeal For Side Sleeping. Natural, Light, Healthy And Soft. İts Characteristics Change According To The Down And Back Feather Ratio. Washable. Filling Material: 100% Goose Down. Upper Part: 90% Down + 10% Back Feather, Middle Part: 30% Goose Down + 70% Back Feather, Lower Part: 90% Down + 10% Back Feather Size And Weight : 50X70 Cm, 1100 Gr