In 3D channel fabrics, how do you balance the amount of down filling and the lightness of the fabric?

Compared with traditional down jacket fabrics, how does 3D channel fabric improve warmth retention efficiency?

Jacquard Polyester Taffeta: Classic and Innovation in Modern Textiles

Outdoor Waterproof TPU Fabric Leads New Trend

How to Choose the Right Waterproof Fabric

Is TPU safe for human skin?

What is a TPU film?