We like to call your tech pack your "visual contract" or "blue print" for your factory, in order to achieve the results you are looking for in production.
Technical Specifications Package can be fairly simple or very complex, depending on your product, where and how you plan to manufacture, and other factors. It includes your technical flat design sketches, detailed design and construction call out's for your product, bill of materials, pattern ticket/cutter's must, points of measure and graded measurement specs, and label placements.
It can also sometimes include costing information, packaging and shipment detail.
We recommend that ALL clients have a tech pack before they go into production. They also serve as an essential tool during the product development process to track your pattern and prototype changes.