Dr. Marten's Union Jack 8-Eye, Men's Boots

Are these waterproof?

iam usually a size 6 in women’s should I get 5?

Please help. i wear a 7 and sometimes and 7 1/2 in us women’s shoe. i want to get the right size so no return is necessary. what size do i order here

Are these boots waterproof? I plan to wear them this winter.