The Dunk Tank is for all ages and holds 300 Gallons of water. Seat holds up to 220 lbs in weight! This rental does include 3 softballs for use. Dunk Tanks are the perfect rental item for any summer event! Dunk friends, family, your boss, colleagues & more! This item is popular for school events, company picnics, church carnivals & backyard parties such as graduations! The customer will need to provide a water source and hose on site to fill the Dunk Tank. If setting up the unit at a park or other place without a water source we can provide on site portable water (additional costs apply, email us for pricing information).