Öjbro Swedish made 100% Merino Wool Soft Thick & Extremely Warm Mittens (as Featured by the Raynauds Assn) (Medium, Karg Rörö)

How do they hold up in the rain?

Can you wash and dry these?

large women's hands. what size should I order?

Are these for men too? Would that change sizing recommendations? Have a medical condition and need extremely warm mittens/gloves that are not bulky.