You do need to hand wash, I bought my daughter a similar one last year from them and she wears it all the time, I have a few cashmere pieces from them , I like their sleeveless tanks, and again it’s all a hand wash job, but they wash wonderfully and hold their shape, it genuinely feels like a completely different material to the cheaper cashmeres, very soft and luxurious, but yes they are hand wash in cool water.
i think as much as the markies ones are cashmere, just lower quality, i do think it’s a bit of a rip off, they would be better with wool. I think people see the label cashmere and thinks it’s all the same, it’s not, it’s not even close to being the same.
on saying all that, as said, I rate markies for food, bras, cut flowers, and will often pick up a shower gel or something, I also buy their socks, but that’s it for me sadly,