All season down comforter from Brooklinen. Used with duvet cover, used less than 1 season. A smooth 100% cotton sateen shell envelops the perfectly fluffed cloud-like comfort of down. Down clusters create a soft place to land anytime, with weights ranging from Lightweight to Ultra-Warm. Treated with antimicrobials, this classic for coziness is finished with our signature loops to keep your soft sleep addition in place in a duvet-in short, it's a safe bet all around. Baffle box construction means an even distribution of the best kind of fluff, for a perfectly laid sleep plan. • Made of hypoallergenic and DOWNMARK® Certified down fill • The details that make your life easier: • 3 choices of warmth to choose from, so you can have the perfect night's sleep • All-night comfort with our comforter-securing duvet ties • Baffle box construction for evenly distributed fill, for less fuss and more comfort