Yes, most shade umbrellas are designed to be waterproof. However, it is important to check the product description or speak to the manufacturer to be sure. Some umbrellas may be water-resistant, meaning they will repel some water but are not intended to be fully submerged. Waterproof umbrellas are usually made with a PVC or polyester canopy and have sealed seams to keep water from leaking in. When choosing a waterproof umbrella, make sure it is also windproof so that it can withstand gusts of wind without blowing away.