Fill a large pitcher or 8 highball glasses with ice.
Pour 12 oz. raspberry syrup (such as Torani brand) and juice of 8 large limes over ice, then top with 32 oz. chilled club soda.
Stir to mix, and garnish with lime wedges. (For a grown-up version, add 1 oz. gin or vodka to each glass.) Serves 8.