The baby diapers or toddler diapers that hold the most pee are Gentle Steps Diapers, Pampers Baby Dry Diapers, Pampers Cruisers Diapers, Huggies Snug and Dry Diapers and other Huggies brand diapers.
Gentle Steps diapers are a cheap but yet very absorbent diaper for babies and toddlers and even my own 7 year old wears Gentle Steps Size 7 diapers for bed wetting or on car trips.
His little brother who is 2 years old wears Gentle Steps diapers as well although he use to wear Pampers diapers which are more expensive.
I find that the Gentle Steps Diapers from Dollar general are just as absorbent and even more absorbent than more expensive brands such as Pampers Diapers.
The Gentle Steps Diapers cost between 15 cents to 24 cents per diaper while Pampers costs around 37 cents to 55 cents per diaper.
The way disposable diapers work to absorb pee is through the use of SAP or Super Absorbent Polymer.
The diaper soaks up pee because of the Super Absorbent Polymer that swells up as it absorbs the liquid.
This is why when a baby or toddler pees in a diaper the diaper swells up and gets squishy because of the SAP.
SAP in the diapers can soak up and hold the pee away from the skin which is what makes disposable diapers much better than cloth diapers.
With Cloth Diapers they just soak in the urine but a child wearing cloth diapers feels wet and is more prone to diaper rashes.
The disposable diaper does not really feel wet against the child's skin unless it's at the point of leaking.
A diaper should be changed before it gets soaked enough to leak but sometimes it happens.