人造纖維發熱衣就很夠啦~

"From an environmental perspective, the best solution is to forgo cashmere altogether. Wool from sheep, yaks or camels can still be made into very soft fabrics. These animals can also produce much more fiber a year than cashmere goats without causing the same level of ecological damage. Or consider vintage cashmere.

從環境的角度來看，最好的解決方案是完全不用羊絨。仍有可能用綿羊、氂牛或駱駝的毛製成非常柔軟的織物。這些動物每年能生產比絨山羊更多的纖維，但不會造成同樣程度的生態破壞。或考慮二手羊絨。"

https://cn.nytimes.com/opinion/20231219/holidays-environment-cashmere/zh-hant/dual/