A blanket is like a fire extinguisher we hope we do not need to use it. We have it ready and learn how to use it before the emergency hits. Please be prepared. Please train your donkey to accept the blanket before the emergency hits. I never blanket unless an emergency or the donkey is suffering cant move due to arthritis and age. As soon as the weather gets out of extreme cold the blanket is off. Or the vet says the stall rest is over etc., No blanket is water proof. We must use common sense. Warm water in the winter (clean) helps donkeys drink more and lose free salt.