The Sleep Philosophy down alternative comforter collection features 3M Thinsulate Featherless Insulation-600 Fill Power. This revolutionary, loose fill down alternative mimics or surpasses the performance of natural down in Fill Power, loft and overall performance. Made of durable, lightweight polyester fibers, 3M Thinsulate Featherless Insulation provides warmth without a single feather. 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. Great sleep, it never goes out of style. That’s our Sleep Philosophy. Patented 3M Thinsulate Featherless Insulation Light weight for all season use Classic box quilting This Level 1 down-alternative comforter is perfect for year-round warmth. Filled with 3M featherless fiber, this revolutionary, loose down-alternative fill mimics or surpasses the performance of natural down in fill power, loft and overall performance. Year-round warmth 12" box quilting prevents the fill from shifting, providing an even layer of warmth and comfort Provides warmth without a single feather Hypoallergenic Features: Quilted, Down Alternative Down Fill Power: 600 Fill Power Thread Count: 300 Warmth Factor: Lightweight Bed Size: Twin Fill Weight: 22 oz. of Fill Base Material: 100% Cotton Care: Machine Wash Bed Cover Type: Comforters Country of Origin: Imported