I'd even narrow down that category and say 'Kittens 3 weeks-12 weeks' old.
I've had many potential adopters specify that 'the oldest they're willing to consider" is 8... 10... 12 weeks old. I've also had many people tell me they're not willing to even meet our 4-6 month old kittens because they're "too old."
#AdoptionsandAdoptionPrograms