Tech Pack Creation for Unique Sleeve

I need a comprehensive tech pack for a cut and sew product - an elasticated sleeve designed to slide over squeezy bottles. This sleeve will be made from a cotton blend.

Key Requirements:
- Tech pack should include detailed material specifications and assembly instructions.
- It must provide all information necessary for a manufacturer to produce the item from start to finish.

Ideal Skills and Experience:
- Proficiency in tech pack creation.
- Experience with cut and sew products.
- Understanding of cotton blend material specifications.
- Knowledge of packaging details for final product.