Private label kids clothing required from USA

I'm looking to develop some KIDS pieces/beach products for our shop.
We have two stores in New York and a website.
We are looking to develop a Kids hooded towel & a round beach towel.
Do you do private label?
Is this quantity flexible?
Can we do more than one colorway?
Do you offer sizing?
And what is the pricing?
If we could start a conversation for private label production that would be great.
Any information you can send over.
Any information you can provide would be great