Overview

Amazon's Ships in Product Packaging (SIPP) program allows sellers to ship products in their original packaging without additional Amazon overboxing, saving on per-unit fees. To make enrollment easier, Amazon now offers a product grouping feature that lets sellers certify multiple similar product variations under a single test report. Understanding how product groups work can significantly reduce the time and cost of getting your catalog SIPP-certified.

Key Points / What Sellers Need to Know

• One test can cover many ASINs — If you have product variations that are physically similar and share the same packaging, you can certify them all through a single test by grouping them together under one primary ASIN.
• The primary ASIN must be the largest and heaviest — Every product group requires a primary ASIN, which serves as the benchmark. All other ASINs in the group must be the same size or smaller.
• Secondary ASINs don't need to be on the same listing — Variations from different product detail pages can be included in the same group, as long as they meet the similarity criteria.
• Already-certified primary ASINs simplify everything — When the primary ASIN is already SIPP-certified, secondary ASINs in the group can be certified without submitting a new test report, with limited exceptions for fragile items and liquids.
• You can add up to 300 ASINs at a time — The enrollment portal supports bulk ASIN entry, making it practical to certify large catalogs efficiently.

Product Group Requirements

Amazon enforces strict criteria to ensure all products in a group are genuinely similar enough to share a certification. Secondary ASINs can differ from the primary ASIN by up to 25% in a single dimension or total volume, and up to 25% in weight. However, products weighing 8 ounces or less are exempt from the 25% weight restriction. Amazon will not accept products exceeding 108 inches in length or 165 inches in girth for product grouping certification. Beyond size and weight, the material composition must be identical — if your primary product is made of a certain material, every secondary product must match. The packaging type, design, and specifications also need to be the same across the group, down to details like corrugate grade and wall thickness. The product-to-packaging volume ratio must be similar, and pack quantities must match exactly, with a narrow exception for soft goods like diapers, textiles, toilet paper, and paper towels.