Are they actually as waterproof as they say? They look mega comfy and I quite fancy [[https://www.allbirds.co.uk/products/womens-wool-runner-up-mizzles-ginseng?fbclid=IwAR2ObFkcjgL9A7kzwfF0dO5Ru-TocnZOiWe_QKYdoi1QuBP5WGZYiWXDngc&utm_campaign=paid_Facebook_UK_Retargeting_Footwear_LC&utm_content=UK_Women_Mizzle_Ginseng_17.11&utm_medium=photo&utm_source=facebook&utm_term=UK_Retargeting_30D_Women_Footwear_LC these]] but over £100 is a hell of a lot to pay for what turn out to be leaky slippers.