In the production stage, the material selection by the Tech Pack Designer is one of the most important aspects. The tech pack for a clothing brand defines the “raw ingredients”. This choice defines the garment’s quality, price, and environmental footprint. In our time, the legal standard of recycling is just as important as the selection of the cloth itself. It is not just picking a fabric to managing a complex matrix of performance data.
Chemical safety and global sustainability standards are necessary to meet for legal approval of the fashion garments. The environmental protection regulations are strict throughout the article’s life cycle. The tech designers take care of all the factors that can lead to legal action against the brand’s products.
The Designer’s Selection Criteria
The tech pack for clothing brand evaluates materials based on a “Product-Market Fit” after considering all factors, price, and legal aspects. For example, a luxury silk blouse and a high-performance running jacket are different in nature. Due to their purpose, they require entirely different selection logic for both products according to the “Product-Market Fit”.
The designer must balance the following factors.
- Hand-Feel & Drape: The fabric for garments is first tested to see how it falls on the body. It all depends upon the essentials for the aesthetics of the garments. The look and comfort level of the fabric are considered simultaneously. They take care to consider the feel factor of garment at the same time. The tech pack for a clothing brand requires balancing these factors over time.
- Dimensional Stability: The shrinkage of the fabric is also tested before the cloth is even prepared or knitted. The tech pack designer ensures the fabric won’t shrink 10% after the first wash. The testing phase follows the AATCC or ISO testing standards.
- Colorfastness: The color testing is one of the most crucial factors. The colorfastness test guarantees the dye won’t “bleed” onto other clothes or fade under UV light after a certain period of time. The tech pack for the clothing brand ensures all the details mentioned are achievable in reality.
📊 Material Performance & Selection Matrix
| Property | Testing Standard (ISO/ASTM) | Designer’s Requirement | Typical Application |
| Tensile Strength | ISO 13934-1 | Min. 400N force before rupture | Denim & Workwear |
| Pilling Resistance | ISO 12947-2 (Martindale) | Grade 4 or higher (no pilling) | Knitwear & Wool Blends |
| Color Fastness | AATCC 61 (Wash Test) | No visible staining/color loss | Multi-color Activewear |
| Water Repellency | AATCC 22 (Spray Test) | 90–100 Rating | Outerwear & Raincoats |
| Dimensional Change | ISO 5077 (Shrinkage) | Max. +/- 3% after 5 washes | Cotton T-shirts |
| Chemical Safety | OEKO-TEX / REACH | Zero Restricted Substances | All (Regulatory Compliance) |
Take Away:
A Tech Pack is incomplete without Performance Thresholds or the Standards for clothing. The tech pack for a clothing brand specifies exactly how a material must behave under stress. If a fabric fails a “Martindale Abrasion Test”. Then the tech designer rejected the fabric at once. The “Martindale Abrasion Test measures pilling or the wear and tear of fabrics under actual conditions.
