1. The fabric is made of 20D ultra-thin cicada wing fabric and has undergone high-tech nano-triple protection treatment: waterproof, stain-resistant, and down-proof; the fabric surface is smooth and dense, with a soft and smooth feel, yet it has excellent wear resistance, is easy to wash and quick-drying, and has a certain degree of down-proofness.

2. The lining uses 400-strand (400T) ultra-soft washable lining fabric, which is breathable and does not shrink, has a soft and smooth feel, and its down-proof effect is superior to ordinary down-proof lining fabric.
3. Triple down-locking stitching process: We use imported Japanese No. 7 round-head needles (smaller needle eye) for the first layer of down-locking, custom-made three-strand high-count waxed thread (with diamond tension) for the second layer of down-locking, and compartmentalized down filling for the third layer of down-locking.