Our water-resistant raincoats are made with woven material and non-waterproof stitching - items that are water-resistant will repel the effects of water to a point. The effects of heavy rain pressure and longer exposure to rain will allow some of the rain through.There are openings on our dog rainwear to attach a leash to a harness underneath which can allow for a small amount of water to pass through as well. For more heavy-duty rain protection, check out our waterproof styles to find the best waterproof coat for dog walking!