I was looking for an application or a supplier that Provide Print on demand services for products mainly such as onesies, Bodysuit and Other Leather Clothing Only. My main goal was custom onesies. such as those https://www.rageon.com/a/products/girls?first=girls&product_type=Onesies&sort=best-selling
I realize this answer comes a bit late, but I hope I can help!
Everything is handmade to order, typically within 48 hours, and can be shipped globally (average of 4 days).
I hope this is helpful
Melissa from Contrado
Get the Contrado app for Shopify: https://apps.shopify.com/contrado-print-on-demand