Rest. Relax. Recharge - A night's sleep underneath a genuine down comforter is like entering paradise. Our cozy, medium-weight duvet inserts are filled with fluffy white down, which offers warmth without heavy weight for greater comfort and better circulation. Our inserts feature baffle-block construction, a sewn-through box design that helps keep the fill in place for an even distribution. Covered in 230-count, 100 percent down-proof, cambric cotton ensures that the soft delicate feathers will stay inside.