The size that diapers go up to is a size 8 for baby and toddler diapers.
They also make a Youth diaper that is usually larger than the size 8 diapers for kids and teens that are too big for size 7 or size 8 diapers but too small for adult diapers.
Pampers do come in a size 7.
Pampers diapers come in size newborn and up to size 7 in their different types of pampers diapers.
Even the Luvs diapers that are also made by Pampers comes in a size 7.
Not only that but Pampers Swaddlers also now come in a size 8 which is a bit larger than the size 7 diaper and is designed to fit bigger kids.
Other brands of diapers also come in size 7 other than Pampers.
Some size 7 diaper brands are.
Cuties size 7.diapers.
Gentle Steps size 7 diapers.
Comforts size 7 diapers.
Rascal and Friends size 7 diapers.
Target Up and Up size 7 diapers.
Huggies little Movers size 7 diapers.
Huggies Snug and Dry size 7 diapers.
Parents Choice Size 7 diapers.
These size 7 diapers are designed to fit larger children who are either larger than normal toddlers or larger and older kids who may still need a diaper but are too small for adult or Youth size diapers.
Size 7 diapers can fit children from ages 4 to up to around 10 to 13 if they are skinny enough.
Cuties also makes a size 8 diaper that is called Boundless that is made for older kids who need diapers.