Abeceda plavání, also known as ABC Kladno, offers swimming courses for infants, toddlers, and preschool-age children in Kladno. Its programs welcome children from six months to six years old, with courses organized for different age groups. Parents and children take part together, and the site describes this activity as suitable from as early as six weeks after birth. The aim is not to teach very young babies to swim, but to build on their natural comfort in water and support gradual, enjoyable adaptation.

Lessons are led by experienced instructors with certificates from an accredited course for teaching swimming to infants, toddlers, and preschool children. Teaching uses gentle, playful activities, including songs and rhymes, rather than a forceful approach. The organization highlights potential benefits such as strengthening the bond between parent and child, encouraging movement and coordination, and making time in the water an enjoyable part of family life. The website also provides practical information for newcomers, course updates, a photo gallery, and details about its operating rules, terms, and make-up lessons.