3 sentences

1. 冬天穿羽绒服很暖和。

   dōng​tiān chuān yǔ​róng​fú hěn nuǎn​huo.

   It's very warm to wear a down jacket in winter.

   Source: Dong Chinese Dictionary

2. 这件羽绒服很轻。

   zhè jiàn yǔ​róng​fú hěn qīng.

   This down jacket is very light.

   Source: Dong Chinese Dictionary

3. 寒冷的冬季让人们穿上了厚厚的羽绒服。

   hán​lěng de dōng​jì ràng rén​men chuān​shang le hòu​hòu de yǔ​róng​fú.

   The cold winter makes people put on thick down jackets.

   Source: Dong Chinese Dictionary