Mary Quant Japanese sweater size OS (M) white grey designer brand knitted top

I bought this sweater at a shopping mall in Japan. Brand Mary Quant. Worn once, great condition. Size labeled M (fits an American/ European size XS-M. Very stretchy. Asian sizes are smaller that’s why) Made in China, 75% polyester, 25% acrylic Short slits on both side of the sweater Length - 26-27’’ Pit to pit - 19.5-20’’