I don’t think that these are in any way meant for the outdoors. The fabric feels like regular cotton and will in no way be waterproofwater resistant. I bought them for our porch swing so the are protected by a roof and won’t face the weather directly but I’m still not confident in their longevity or in their ability to resist mildew. That said, they are beautiful and look great which is why I’m keeping them! I just don’t think they should be marketed as an outside product.