it’s amazing! and what a cute boy!!
great to finally see your carriers in action 
do I have to buy a bigger size as the baby grows?
I like this one. Where can we get this?
No you don’t need to buy bigger one, One carrier goes till they reach 2-3 years old.
Baby grows longer and you become thinner :>
But mostly Chunei size can be adjusted wide range of size.
No you can use 1 size Chunei from newborn through 2-3 years. you can adjust with velcro and buckles
He’s so cute!!!!!!!!!!!! XD
Source:
http://www.buybabycarrier.net/look-modern-podaegi-chunei-baby-carrier.php