create a tech pack to begin production of concealed carry briefs & undershirt with custom logo & waist band

I am looking to create a tech pack to initiate the production of concealed carry briefs and undershirt with my custom logo and waist band. Similiar to the Undertech Undercover concealed apparell except with better fabric, design, strength & comfort. The features I would like to include in the product are holster pockets, double stitched & strap that allows very little movement. I have specific designs for the custom logo and waist band, but would need assistance to create a breathable, durable & functional product. As convenience is key, I am interested in finding a freelancer who can provide reinforcements stitching on the product, as well as create moisture-wicking fabric for breathability and comfort. If you are experienced and capable of creating such a product with my specifications, I would be more than happy to discuss the details of this project further.