The warmth and comfort of a quilt depend primarily on its filling material and craftsmanship details. Mainstream fillings for winter each have their own advantages: down quilts are lightweight, lock in heat, breathable and non-stuffy, with quick rebound upon pressing being the core indicator of quality; silk quilts feature a smooth, static-free touch, suitable for spring, autumn and mild climates; wool quilts have natural moisture-wicking properties and balanced warmth retention, but are only suitable for non-allergic individuals; cotton quilts boast outstanding cost-effectiveness and stable warmth, yet require regular airing to prevent clumping. When choosing a duvet cover, both fabric quality and practicality should be taken into account. High-thread-count cotton and breathable chemical fibre materials reduce discomfort caused by friction. Internal ties and double-layer fabric designs can effectively prevent the quilt core from shifting and down leakage. The uniformity of stitches and edge-sealing craftsmanship directly affects the product’s service life.