The perfect insert if your super hero requires more absorbency for either nighttime or daytime. These inserts add a layer of additional protection and absorbency.
If you're using the Step Up Insert with the Fearless Potty Training Pants then you will need Size 1/2.
If you're using the Step Up Insert with the Big Kids Trainers then you will need Size 1/2 insert for Sizes 1 & 2 and Size 3/4 insert for Sizes 3 & 4.
Step-up Inserts have a contoured shape to them, making them lay trimmer and more natural in the underwear.