DUAL-LAYER FILLED DESIGN: 3-inch ROSE FEATHER ultra-thick down mattress topper features soft down-alternative filling in the top layer and 100% selected goose feather & down filling (80% goose feather & 20% goose down, fill weight 6700g/236.34oz) in the bottom core support layer. Combining cloud-like top softness with long-lasting bottom support, it also achieves balanced temperature regulation for year-round sleeping comfort. 3D BAFFLE CONSTRUCTION: King mattress topper size 60x80inch, equal volume filling uniformly dispersed to prevent clumping & shifting, perfect for side/back/stomach sleepers to alleviate back strain. This goose down and feather mattress topper features 4 elastic adjustable straps, compatible with all mattresses ≤21 inches thick. Stays snugly secured to your mattress—no shifting or sliding, even when you toss and turn overnight. 100% ORGANIC COTTON FABRIC: Cloud-like soft touch, shape & pilling resistant after repeated washes, durable and easy to care for. High-density fabric and double-needle stitching effectively prevents down leakage. The inner goose down and feather filling of the mattress topper undergoes strict quality control and dozens of cleaning processes, and is also safely and friendly for delicate skin. MACHINE WASHABLE & EASY CARE: This feather bed topper queen size conveniently machine washable in cold water and tumble dry on low. A slight natural scent may occur initially but dissipates quickly — mattress topper arrives in vacuum-sealed packaging...Unpack and air it out for 24–48 hours to allow full expansion, or pat and shake the top for optimal fluffiness. NON LIVE-PLUCKED PRODUCTS GUARANTEE: We refuse to product, process or sell live-plucked down or feathers to buyers in usa or other countries that forbid such material. we will assure that such down and feather products originate from the food industry.we will, as always, the research and development of new product and the improvement of product quality, we will make more efforts to do a good job of after-sales services. Down Feather Mattress Topper