Most beach-ready decks are made from plastic—often PVC—for durability and water resistance. A smaller number of themed decks use traditional cardstock for a paper feel; those paper decks are less likely to be fully waterproof.
Most waterproof decks are washable and can be rinsed under water or hand-washed to remove spills. Product listings commonly state they are "washable" or "hand washable," so follow the manufacturer's care instructions on the specific deck.
Common sizes are poker (3.5" x 2.5") and bridge (3.5" x 2.3"). Index options include standard index and jumbo index, with jumbo index noted for easier outdoor readability.
Some sets include clear plastic cases for each deck. Certain game versions also include a clip to keep cards together and attach them to a beach bag or other gear—availability varies by product.
Descriptions emphasize hard, durable plastic construction that resists bending, tearing, and fading while remaining flexible after repeated use and washing. Review summaries also flag these decks as suitable for pool and beach use.