Custom Tshirt Manufacturing Built for Brand Growth

Core Retail Fits

160–220 GSM jersey supports classic crewnecks: balanced shoulders, regular body length, and broad unisex appeal for dependable retail or promotional programs. 180–240 GSM compact cotton suits fitted styles, where closer chest and sleeve measurements position a garment for fashion basics or body-conscious collections.

Fashion-Led Silhouettes

220–280 GSM cotton gives oversized and boxy tees enough structure for dropped shoulders, wider bodies, and streetwear-focused premium capsules. 180–240 GSM jersey keeps longline styles wearable; the extended hem targets layered looks, music merchandise, and fashion-forward casualwear.

Performance Styles

140–180 GSM polyester or nylon blends suit performance tees, using moisture-management finishes, stretch, and flatter seams for training or event uniforms. 6 silhouettes do not require six separate blocks; brands can share neck and sleeve specifications while controlling grading, body length, and ease by customer segment.

Fiber Content And Hand Feel

100% ring-spun cotton gives a familiar dry hand, breathable comfort, and reliable screen-print adhesion; combed yarn reduces surface fuzz versus open-end cotton. Organic cotton needs certification documentation when a brand intends to make an organic-content claim. 50/50 recycled cotton-polyester blends improve durability and drying speed, while polyester offers moisture management for active use. Modal or rayon blends create a smoother, softer drape but require controlled washing because wet strength and shrinkage can vary by blend.

• Ask for fiber-content test reports.
• Approve a washed swatch, not only raw fabric.
• Specify allowable length and width shrinkage.

Knit, Weight, And End Use

160 GSM single jersey suits lightweight promotional and summer tees, but pale colors may need a heavier build for opacity. 180–220 GSM jersey is the common choice for premium everyday tees and provides a more stable print base. 220–280 GSM interlock has a dense, smooth two-sided face with better body and opacity; it suits elevated basics. 180–240 GSM pique adds a textured surface and breathability for polos, where embroidery and collar compatibility matter.

• Test opacity under retail lighting.
• Measure shrinkage after the intended wash cycle.
• Match decoration to the knit surface.

Color And Surface Design

Pantone-matched dyeing colors the fabric itself and is best confirmed with lab dips before bulk cutting; it suits branded solids but adds development time. All-over printing creates edge-to-edge graphics, yet seam placement and white-base coverage require careful artwork engineering.

Print And Embroidery Selection

Screen print gives opaque, durable color on repeat orders, while DTG suits detailed short runs and DTF or heat transfer handles multicolor placements with minimal screen setup. Embroidery adds dimensional texture but fine gradients, tiny lettering, and heavy stitch counts can distort lightweight jersey.

Private Label Finishing

Woven labels, neck prints, hangtags, and custom packaging turn a blank garment into a sellable private-label product. Neck prints reduce collar bulk, while woven labels offer a premium tactile cue; confirm care-content, fiber statements, barcode format, and pack ratio before production.

Collar And Neck Stability

A 1×1 rib collar around 220–300 GSM should recover cleanly after 10 stretches without permanent waviness. Specify collar height, seam allowance, and a shoulder-to-shoulder neck tape that lies flat without puckering. A 3–5% shrinkage target after the agreed wash method protects neckline shape and garment length. Inspect both collar symmetry and tape attachment on every size-set sample.

• Check rib recovery after repeated stretching
• Confirm neck tape reaches both shoulder seams
• Measure post-wash neck opening and body length

Seams And Hem Performance

A 10–12 stitches-per-inch lockstitch is a practical baseline for jersey side seams and hems. Too few stitches can open under strain; excessive density can cause seam puckering or needle damage. A 6 mm twin-needle hem should remain even around the full circumference, while side seams must hang vertically. Check for skipped stitches, twisting, roping, and unsecured thread tails under normal stretch.

• Verify shoulder seams are balanced and flat
• Check side-seam alignment after washing
• Stretch hems to reveal skipped stitches

Grading And Wash Approval

A graded size set from XS through 3XL should use deliberate changes to chest, body length, shoulder width, and sleeve proportions. Simply enlarging one base pattern often creates poor shoulder balance and inconsistent perceived fit. One approved wash test should assess measurements, spirality, color change, seam torque, and decoration integrity before bulk cutting. Record tolerances by point of measure so repeat orders can be inspected against the same standard.

• Approve fit on more than one body size
• Compare pre-wash and post-wash measurements
• Retain patterns, grading, and test records

Match Product Expertise

2 comparable production samples reveal more than a generic catalogue. Request close-up photos of collar rib, shoulder tape, hems, print registration, measurement sheets, and post-wash appearance. 100-unit programs need an MOQ that works by style, color, and fabric—not merely a headline minimum. Confirm whether the threshold applies per colorway and whether restocks use the same terms.

Verify Development And Materials

1 complete specification pack should state Pantone colors, fabric composition and GSM, measurements with tolerances, stitch details, artwork files, labels, packaging, and approved trims. 3 fabric options should be compared for hand feel, shrinkage, pilling, colorfastness, and lead time. Ask for swatches, mill test reports, and applicable OEKO-TEX or GOTS documentation rather than relying on verbal claims.

• Approved sample photos and measurements
• Fabric test reports and fiber content
• Current factory certificates and audit scope

Audit Controls And Communication

4 checkpoints—incoming fabric, in-line sewing, measurement and decoration, then final packed-goods inspection—create traceable control. Ask for the factory’s AQL standard, inspection report format, defect-handling process, and compliance certificates such as BSCI, WRAP, or relevant social audits. 24-hour acknowledgment and a named development contact reduce preventable delays. Confirm revision limits, approval sign-offs, time-zone coverage, and who owns the graded patterns and production records.

Confirm Capacity And Critical Path

6 stages normally govern a realistic first order: feasibility, material sourcing, prototype, revisions, pre-production approval, then bulk manufacture. Obtain a dated critical-path timeline that separates sample transit, approval time, production, final inspection, and freight. 80,000 monthly units may indicate scale, but reserved capacity matters more. Confirm current loading, production lead time by fabric, Incoterm, shipping mode, insurance, destination charges, and the point when final balance is due.

Vague Tech Packs

1 missing measurement point can create a full resample cycle and inconsistent repeat orders. Specify graded measurements, Pantone colors, stitch details, label positions, artwork files, and approved reference photos. 2 sample rounds are common when a sketch is the only input. Freeze a signed spec sheet before bulk cutting and record every approved change.

Fabric By Price Alone

160 GSM open-end jersey may meet a target cost but feel, drape, and wear differently from 180 GSM ring-spun cotton. Request swatches and compare hand feel, opacity, recovery, pilling, and wash results. 3 supplier quotes can use different fiber blends under similar descriptions. Approve fiber content, GSM tolerance, color standard, and wash performance in writing.

Approval And Tolerance Gaps

2 cm of unagreed chest tolerance can turn an acceptable production run into rejected retailer inventory. Set measurement tolerances by point of measure and approve a pre-production sample before bulk. 5% shrinkage after washing can change both fit and print placement. Require a wash test on the actual bulk fabric and revise patterns before cutting.

Decoration And Freight Assumptions

1 oversized high-density print can crack or feel rigid on lightweight jersey. Confirm artwork dimensions, ink layers, placement, and test prints on the selected fabric before approval. 15–30 days of production does not include international freight, customs clearance, or destination delivery. Build a shipping buffer and obtain the factory completion date separately from the freight estimate.

Build The Product Brief

Within 3 days, the brand supplies target retail price, competitor references, color count, size range, and required delivery date. Junsheen reviews the brief for a practical 100-unit-per-style-and-color starting MOQ, construction risks, and material availability.

• Name the intended wearer and fit
• Set colorways and planned size ratio
• Assign one brand approval owner

Lock Specifications And Artwork

By week 1, convert the concept into a tech pack with measurements, tolerances, stitch callouts, Pantone references, label placement, and packing instructions. Supply vector artwork in AI, EPS, or print-ready PDF; the factory confirms screen, DTF, embroidery, or transfer suitability before sampling.

• Approve garment measurements before decoration
• Specify print dimensions and placement
• List every branded label and trim

Sample And Revise

During weeks 2–4, review a prototype for hand feel, shrinkage, fit, print registration, and wash performance. The brand consolidates comments into one revision file, then approves a corrected sample or size set as the gate to bulk material commitment.

• Measure against the approved tech pack
• Wash-test decorated sample garments
• Record changes on the revision sheet

Approve Bulk And Deliver

After pre-production approval, Junsheen schedules cutting, sewing, decoration, final inspection, packing, and export preparation; typical timing depends on fabric and order complexity. Before balance settlement and shipment, the brand approves production photos or inspection results, carton marks, and delivery documents.

• Confirm bulk color and trim approvals
• Inspect measurements and decoration quality
• Approve packaging before shipment