Inspired by the natural structure of feathers and hollow bones, Hollow Thermal PP Filament Yarn is engineered with an internal hollow core that ensures exceptional thermal insulation and comfort. This lightweight yet highly durable fiber provides superior breathability, enhances freedom of movement, and offers eco-friendly and cost-effective advantages. With thermal resistance surpassing wool, HOLLOW stands out as an ideal choice for high-performance apparel such as thermal wear, scarves, and gloves.