The fibres are designed to be hollow inside, usually with a hollow ratio between 20% and 40%, which can effectively trap air and form a heat-insulating layer. The hollow structure makes the fibres less dense and lighter.

Lightness: Due to the hollow structure, the fibre density is lower than that of solid fibres, making the textile lighter.

Warmth: The still air in the hollow structure is an excellent insulating medium, which can effectively prevent heat loss, so polypropylene hollow yarn has excellent warmth.

Breathability: The hollow structure makes the fibres have good breathability, which can quickly discharge moisture and keep you dry and comfortable.

Softness: the fibres are soft and pleasant to the touch, making them suitable for intimate apparel and home textiles.

Durability: Polypropylene itself has high strength and abrasion resistance, the hollow yarn has good durability while remaining lightweight.