Training pants are used as an aid when potty training. The pants are worn as regular underwear and toddlers usually like that the pants look like 'big kid undies'. Cloth training pants have extra absorbent layers that helps absorb urine and creates a wet feeling for the child. This will then help the child to associate the feeling of needing to go to the toilet with the wet feeling of the training pant.
Although the training pants have a protective layer of PUL to prevent instant leakage, when the pant gets wet it is not leakproof. The training pants are not like a nappy. The training pants will leak eventually, but it gives you the chance and time to bring your child to the potty without getting pee all over the floor or the couch. As soon as the child wets the training pant, take it off and sit the child down on the potty or toilet. Then simply rinse the training pants and set aside to put in your next washing load.