What is the warmth retention of Zhongshan cashmere in knitted sweaters?

2026-08-17 12:04:21

The thermal insulation ability of cashmere ranks first among all natural knitted sweater fabrics, and what's even more rare is that it not only provides super warmth, but also achieves ultimate lightness.

1. The essence of warmth: the more static air is locked in, the stronger the warmth

The core logic of all insulation fabrics is the same: locking in as much static air as possible through fiber structures. Air is a poor conductor of heat, and the thicker the static air layer, the slower the heat loss, and the better the insulation.

The fiber structure of cashmere is naturally designed to lock in temperature:

Extremely fine fibers: The diameter of cashmere fibers is usually between 14-17 microns, making it one of the finest types of animal hair fibers, far finer than ordinary sheep hair; The finer the fibers, the more fibers can be arranged per unit volume, and the denser the trapped air layer;

Natural hollow+high curl: Cashmere fibers have a hollow structure inside, with high natural curl, good resilience, and extremely strong fluffiness, which can form a thick air insulation layer at a very light weight;

Thin and smooth scales: The fiber surface scales are thin and tightly adhered, reducing air flow and further enhancing the temperature locking effect.

2. Data comparison: For the same weight, the warmth is 2-3 times that of ordinary wool

Industry test data shows that under the same weight and weaving density:

The warmth retention rate of pure cashmere knitted fabric is 2-3 times that of ordinary wool;

To achieve the same insulation effect, the weight of a cashmere sweater is only 1/2 to 2/3 of that of a regular wool sweater;

Simply put, the warmth of a thin cashmere sweater can rival that of a thick woolen sweater, but it is more than half lighter than a woolen sweater.

This is also the most charming aspect of cashmere: it is not built on thick layers for warmth, but uses ultimate fiber properties to achieve a "light and warm" wearing experience. It has no weight-bearing sensation when worn, but can firmly lock in body temperature, making it an invisible warmth artifact in severe cold weather.