The best diapers for an 8 year old boy that wets a lot would be Pampers Baby Dry size 7 or Pampers Swaddlers size 8.
Another very absorbent diaper that would fit an 8 year old boy that wets a lot is Dollar General Gentle Steps size 7 diapers.
They swell up a lot and hold a lot of pee and even myself as an adult wear them with a bit of modification and they are very squishy and get bulky once you fill them up with pee.
It is normal for your 8 year old son to poop his diaper at school everyday.
Pooping a diaper in school or anytime is better than pooping in the toilet and walking around and sitting in a poopy diaper feels awesome as well
Tell your son to enjoy his diapers which you said he does and don't feel ashamed about it.
If your 8 year old son wants to go back to diapers you should let him.
Your 8 year old son should be able to fit into a Pampers Baby dry size 7 or pampers Cruisers size 7.
There's also a size 8 Pampers swaddlers or even Gentle Steps size 7 diapers that would fit your 8 year old son.
Diapers are the most comfortable underwear and you can pee and poop in them without having to go to the toilet.
I wish my parents would've put me back in diapers at 8 or at least never potty trained me.
I loved wearing diapers at 8 years old but had to sneak wearing them.
Here's another boy of around 8 years old that was made to wear diapers by his parents .
