I love these Hanna Andersson organic cotton Training Unders because they come in fun designs (for boys and girls), and the crotch is thick and durable. If there's an accident, it will be more of a mist than a downpour.
My daughter loves wearing them, and I love that they're now on sale: $20 for a 3-pack (normally $28) at Hanna Andersson.
That's so much more eco and economical than throw-away pull-ups.
What kind of training pants does your toddler wear?