One of the most important stages in apparel production happens between the pre-production sample and bulk manufacturing. While the two should ultimately represent the same finished product, they are created in very different environments—and understanding that difference can help brands set realistic expectations for production.
What Is a Pre-Production Sample?
A pre-production sample, often called a PP sample, is the final sample a brand reviews before a factory moves into bulk production.
It is designed to represent what the finished garment should look and feel like, incorporating the decisions and revisions made throughout the sampling process. The factory uses the closest available fabric, trims, finishes, findings, and construction methods to create the sample.
However, there can be limitations. The exact bulk fabric may not yet be available, especially when fabric is knitted or woven specifically for the production order. As a result, the PP sample may use a substitute fabric that closely represents the intended bulk material.
The sample is also typically made in a sample room by one person or a small team. This allows the maker to focus closely on the individual garment and make adjustments along the way.
Bulk Production Is a Different Process
Once production begins, the garment moves from a sample room into a manufacturing line.
Instead of one person constructing the entire garment, bulk production involves a team of operators, with each person typically responsible for specific operations. The garment moves through the line as workers repeatedly perform their assigned steps.
This creates a completely different production environment.
Bulk garments are also made using the actual production materials, including the final fabric, trims, finishes, and other components. Since many fabrics are produced specifically for an order, the characteristics of the final material can affect how the garment looks, feels, and performs compared with the earlier sample.
That doesn’t mean the bulk product should be different from what was approved. It means the production process has variables that must be properly managed.
The Role of the Pre-Production Sample
The PP sample is the final opportunity to review the garment before bulk production begins.
It should incorporate the decisions made throughout the development process, including fit, construction, measurements, materials, trims, finishes, and other details.
This is why careful review and approval of the PP sample is so important. Once approved, it becomes a critical reference for the factory as production moves forward.
Your Tech Pack Is the Blueprint
One of the most important pieces connecting sampling and production is the tech pack.
A well-developed tech pack establishes the specifications and requirements for the garment. It provides the factory with a blueprint for what should be produced, helping ensure that the approved sample and the bulk product are aligned.
The goal isn’t simply to approve a sample and hope the bulk matches. The entire development and production process should be guided by clearly documented specifications.
At Stars Design Group, strong product development means understanding what happens at every stage—from initial concept and sampling through sourcing, technical development, and bulk manufacturing.
Why This Matters for Apparel Brands
If a bulk production run has ever surprised you, you’re not alone.
Understanding the difference between sampling and bulk production helps brands identify potential issues earlier and build better processes for managing them. The more clearly a product’s requirements are defined before production, the better equipped a manufacturing team is to deliver consistent results at scale.
A successful production run starts long before the sewing line begins. It starts with a clear vision, a strong development process, an accurate tech pack, and careful communication between the brand and its manufacturing partners.
Ready to Take Your Product From Sample to Production?
The right apparel development partner can help bridge the gap between your vision, your approved sample, and your final product.
Stars Design Group provides end-to-end apparel solutions, from design and technical development to sourcing, manufacturing, and production management. Whether you’re developing your first collection or scaling an established brand, our team can help you navigate the process and build products ready for production.
Have an apparel project in development? Contact Stars Design Group to learn how we can help bring your product from concept to finished garment.