This Reserve duvet set is our most refined top layer, made for an elevated sleep experience with exceptional smoothness, couture detailing, and understated luxury. Crafted from rare, extra-long staple 100% organic cotton threads that are slow-spun and finished in flame, this sateen duvet set offers a silky softness and lustrous sheen, and is elevated with couture details for an elegant finish. The Feel Exceptionally silky, smooth, and fluid with a luminous drape Temperature All-Season Best For Those who want elevated luxury, refined details, and a silk-like sleep experience year-round with a removable, washable top layer that transforms the bed