This duvet is made with soft, plush microfiber fill, a high quality polyester that's meant to mimic the softness of down. The shell is soft 300 thread count cotton. Microfiber doesn't have the same insulating properties as down, so microfiber duvets are heavier weight. A fair bit of fill is required to achieve the desired warmth. One benefit of a synthetic duvet is that it can be machine washed at home, given your machine is quite large and you wash/dry on a low heat setting. Natural down and feather are sensitive to moisture, but polyester is not! This generously-filled All Season Weight is warm enough for cold sleepers or cool room temperatures. Features - Box Construction - Boxes to prevent content from shifting 300 Thread Count - Prevents fill from escaping 100% Cotton - Fine cotton allows the fill to breathe Corner Loops - Loops on all 4 corners to tie and anchor the duvet in place Gel Microfiber - Down-like luxury and benefits from technically advanced microscopic synthetic fibers Easy Care - May machine wash and dry or have professionally cleaned / Filling completely re-lofts after washing Hypoallergenic - Synthetic Microfiber filling naturally resists bacteria and other allergens Guaranteed Quality - Guaranteed against manufacturing defects for 5 Years OEKO-TEX Standard 100 Certified Imported Standard Dimensions - Twin - 64" x 86", 45 oz Fill Double/Full - 78" x 86", 56 oz Fill Queen - 88" x 90", 65 oz Fill King - 102" x 90", 74 oz Fill Care Instructions - Machine Wash & Dry on low heat setting