Core Viewpoint - FILA has launched the new "4810 Lingfeng Goose Down" series of down jackets, marking a significant product in the "FILA 4810 series" that emphasizes Italian craftsmanship and innovative technology for comprehensive protection in snowy environments [1] Group 1: Product Features - The "4810 Lingfeng Goose Down" series utilizes "4810 Lingfeng Extreme Protection Technology," which consists of a three-tiered protection system: outer layer defense, middle layer stabilization, and inner layer thermal locking [1] - The outer layer features PERTEX® Quantum high-end outdoor lightweight protective fabric, establishing a strong defense foundation [1] - The middle layer employs RDS-certified high-loft goose down filling to maintain internal microclimate stability [1] - The inner layer incorporates innovative far-infrared heating lining for consistent internal temperature maintenance [1]