Once all designs are finalized; tech packs need to be created for each style. Each tech pack acts as a "Bible" with containing all details and standards that the factory must adhere to when making your product.
Tech packs can be fairly simple or quite complicated depending on the design. For example, a simple knit tank top will require little construction and usually only one fabric, whereas an outerwear piece can have a lot of construction and require many fabrics. It will also have more POMs (points of measurement).
Each tech pack consists of color CADs, technical black and white CADs with clearly drawn details showing construction call outs, a bill of materials, and a fully graded spec with a POM sketch to show the factory how to measure the garment.