The program was expanded to 10 pools in 1967. Twenty more pools were added in 1968 and 30 more in 1969. The pools were designed for youths 14 and under and over four feet tall and were open from early July to mid-August. Although each mini-pool was located next to a shower and comfort station, there were no changing areas, and children were to arrive at the site in their swimming suits. By July 1972, Parks operated 72 mini-pools throughout the city, with two more opening in the Bronx later that summer.