She bought a plush silk pajama set that feels incredibly soft and comfortable.

plush 是形容词，意思是"豪华的、奢华的"，常用来形容柔软、舒适且高档的物品。这个词源自名词 plush（长毛绒），因为长毛绒织物给人柔软奢华的感觉，所以引申出"豪华的"含义。