Yves Delorme Down Comforters use top grade white European goose down to provide loft for insulation and lightness for freedom and comfort. Encased in the finest quality batiste, these comforters combine modern technology and beautiful craftsmanship. Heavier weights have baffle box construction that keeps the down in place and allows for maximum loft; lighter comforters have box stitching, the preferred design for summer and ultra-light products.