Perfect (and genuine) coat - Marmot Chelsea Coat - Women's

i was a little sceptical about purchasing a coat on a site that sells solar panel accessories but this was not a scam! the coat is legit. it’s i think roughly 700 fill down and claims to be water resistant. i’ve yet to test this, but the coat generally seems fine on a superficial level of examination. i would say size down. 5’2”, 34B, 26” W, 36” Hip and i found the XS a little too big. the vanity sizing is nuts here. what’s going on, marmot?