In custom bra manufacturing, dimensional tolerances are significantly tighter than standard outerwear. Chest underband tension tolerance must be held within +/- 0.5 cm, cup volume depth within +/- 0.2 cm, and strap elongation modulus variance within +/- 3%. Grade rules cannot follow a linear scale when moving from core sizes (A–C) to full-bust sizes (D–GG). For extended sizes, pattern makers must increase wing height, broaden wire arc radius, widen shoulder strap dimensions (from 12mm to 18mm+), and incorporate high-modulus power mesh internal slings to prevent side-breast displacement.

Cup distortion and fabric relaxation (creep) are caused by unstable synthetic microfibers and low-density foam cores. Affix Apparel mitigates this through three engineering controls: 1) Thermal Preshrinkage: Synthetic fabrics undergo heat setting at 180°C–190°C prior to cutting to lock stretch memory; 2) High-Density Polyurethane Cups: We use breathable 3D molded polyurethane foam rated to withstand 50+ wash cycles without yellowing or dimpling; 3) Modulus Recovery Audits: Elastic tapes and wing fabrics are tested to guarantee an elastic recovery rate exceeding 95% after 24 hours of sustained stretch extension.

Under a CMT (Cut-Make-Trim) agreement, the factory only provides labor and machine assembly, which accounts for roughly 25%–35% of total garment cost. The brand retains all responsibility for sourcing fabrics, custom dyed elastics, foam inserts, and shipping logistics. Under FPP (Full Package Production) with Affix Apparel, we manage technical design, fabric milling, OEKO-TEX certified elastics, mold tooling, prototyping, assembly, lab testing, custom labeling, and packaging (65%–75% of unit cost). FPP eliminates component mismatch risks, reduces shipping overheads, and guarantees single-point quality accountability for your brand.

We maintain an extensive inventory of high-grade stock fabrics (such as 70/30 Nylon Spandex activewear interlock and modal stretch jerseys) in popular seasonal shades, eliminating high mill minimums for custom dyeing. Additionally, we utilize computerized CAD marker nesting to maximize yield on shorter fabric lays and run consolidated batch setups for cutting and molding tooling. This operational efficiency allows us to offer low minimums of 50 to 100 pieces per style at competitive wholesale prices.

Custom bras worn directly against skin are subject to strict regulatory compliance: 1) OEKO-TEX Standard 100 Class I: Ensures fabrics, wires, and threads are completely free from harmful azo dyes, formaldehyde, heavy metals, and phthalates; 2) REACH SVHC (EU): Verifies metal adjusters, underwires, and closure hooks do not contain nickel or restricted chemical substances; 3) ASTM / ISO Labeling: Requires clear fiber content declaration, care instructions (ISO 3758), and country of origin marking. Our facility operates under SEDEX-audited ethical labor practices.

Yes. If you do not possess a formal factory-ready tech pack, our technical design team can build one from scratch. You can send us initial design sketches, mood boards, or a physical reference garment. We perform reverse pattern engineering, measure point-to-point specs, evaluate fabric stretch percentages, draft digital CAD files, and establish your brand's master size chart before producing your first proto sample.