Who determines FFP certification?
You can find lots of good information about Amazon's requirements on their website - https://www.aboutamazon.com/sustainability/packaging Specifically for FFP, you will find the criteria in the Amazon Frustration-Free Packaging Program Certification Guideline at: click hereBelow is summary for your reference.i. Must Pass ISTA 6-Amazon.com-SIOC test protocolii. Product-to-Packaging Ratio (>30% for Fragile Products & >50% for Non-Fragile)iii. Recyclable Packaging (100% Curbside recyclable materials)iv. Easy-to-Open (Less the 120 seconds)Additional questions can be directed to Amazon through their Vendor Central portal at http://vendorcentral.amazon.com/