You can either use add products through Printful’s push generator or manually sync your products through Squarespace. Here are the steps for each.
1. Through Printful
In your Printful Dashboard, go to Stores and choose the store you want to add products to. Click the Add product button. Once your product is added and saved, it will automatically get uploaded to your Squarespace store and synced with Printful!
2. Through Squarespace
First, go to Printful Dashboard > Store settings > Orders, and enable Import existing products. Then, on your Squarespace profile go to Inventory > Add products. Head to your Printful dashboard and go to Stores > Sync. Finally, connect your Squarespace listings to actual Printful products by uploading print files.