Diapers are designed to keep your toddler dry, so when they pee they don't even realize it happened — they just walk around comfortable and never make the connection. That's the whole reason potty training drags on. UpAiry does the opposite on purpose: your toddler feels wet the second they go, so their brain links "I peed" with "now I'm wet" — but it won't soak through onto your floors. This is what you use between the diaper and underwear stage. Get up to 6 pairs free for a limited time.