You"ll never run out of water with this squirt gun! The Bump "n Squirt inner tube features a specially designed slot that holds the squirter (included), which is fed water directly from the pool or lake you"re swimming in. The heavy-duty 14-gauge vinyl inner tube withstands active water play. Get 2 and play bumper cars on water (each sold separately). Bottom inflates separately to provide a comfortable seat with leg openings so you can propel yourself through the water. Comes with dual handles for a firm grip. Recommended for 2 riders. 42 dia.