The Sleep Philosophy® down alternative comforter collection features 3M™ Thinsulate™ Featherless Insulation-600 Fill Power, a kinder alternative to natural down. This revolutionary, loose fill down alternative mimics or surpasses the performance of natural down in Fill Power, loft and overall performance. Made of durable and breathable lightweight polyester fibers, 3M™ Thinsulate™ Featherless Insulation provides warmth without a single feather, while maintaining warm and fluffy over time.The Sleep Philosophy® down alternative comforter collection features a silky-soft 300 thread count, 100% cotton sateen cover. The comforters have sewn through box quilting so that the down-alternative fill doesn’t bunch or shift. They’re also hypoallergenic so you’ll have a comfortable "sneeze-free" night’s sleep. Four corner loops on the comforter can be tied to help secure it within a duvet cover. It’s also machine washable for easy care. This comforter is also OEKO-TEX certified, meaning it does not contain any harmful substances or chemicals, ensuring quality comfort and wellness.Great sleep, never goes out of style. That’s our Sleep Philosophy.