Gloss Laminated cards are water resistant, but not waterproof. This means the cards stand up well when they come in contact with a small amount of water, but cannot be submerged in water without water seeping into the card and causing damage. Please test your specific application to ensure the cards are appropriate for that use. We also offer 15pt synthetic plastic which has no paper content at all, so it is a more water resistant and waterpoof product. You can find this paper under the "paper" dropdown window in any product where that material is offered