SenLin Insights

Factory knowledge with the source trail left in.

Explainers, ranked decision guides and buyer checklists built from recurring sourcing questions—then separated from official technical and labeling guidance.

How we use sources

Forum and social posts reveal recurring buyer questions and lived experience. They are labeled as discussions. Regulatory statements link to official sources; neither replaces market-specific legal advice.

Sewing operator working on a garment at an industrial sewing workstation — AI-assisted illustration

From reading to better decisions

Ask a more useful question.

A good sourcing conversation connects the garment you want with the evidence you need. Start with your current decision, then use the guides below to prepare a more precise brief.

Keep notes on the material, sample version, quantity and approval criteria. Bring unresolved questions into the quotation instead of leaving them as assumptions.

Put your brief together

Choose a reading path

What are you working on?

Six practical guides, grouped around the decisions buyers make before production.

01

Planning your first order

Start with quantities and the questions that make two quotations comparable.

Minimum quantities Questions before ordering

02

Developing the product

Turn fabric and branding preferences into decisions a sample can verify.

Fabric weight & structure Decoration methods

03

Getting ready for approval

Check the specification and supplier evidence before committing to bulk.

The tech-pack checklist Supplier verification

ExplainersRanked listsComparison guidesUpdated September 2026

Different quantities of folded T-shirts grouped by fabric color — AI-assisted illustration — Editorial illustration

ExplainerSourcing basics

Apparel MOQ explained: why the minimum changes by color, fabric and process

A practical explanation of clothing factory MOQ, the cost drivers behind it, and the questions that prevent a misleading quote.

Folded fleece fabric layers showing brushed and loopback textures — AI-assisted illustration — Editorial illustration

ExplainerFabric science

Hoodie GSM guide: what 300, 400 and 500 GSM really change

A buyer-focused guide to fabric weight, structure, warmth and the specifications that matter beyond GSM.

Garment flat drawings, pattern paper, ruler and fabric swatch on a desk — AI-assisted illustration — Editorial illustration

ExplainerProduct development

Tech pack checklist: the 12 decisions a clothing factory needs before bulk

A practical factory-facing checklist for measurements, construction, materials, artwork, tolerances and approvals.

Screen-printing squeegee applying a simple ink shape to cotton fabric — AI-assisted illustration — Editorial illustration

Ranked comparisonDecoration

DTG vs DTF vs screen printing: ranked by order type, not hype

A decision ranking for custom apparel decoration based on run size, artwork, handfeel and repeatability.

Buyer and garment technician discussing a sample at a worktable — AI-assisted illustration — Editorial illustration

Ranked listSupplier evaluation

15 questions to ask a clothing manufacturer before paying a deposit

A ranked due-diligence list covering product fit, sample terms, ownership, bulk control, defects and labeling.

Garment seam inspection beside a measurement record and clipboard — AI-assisted illustration — Editorial illustration

Ranked listSupplier evaluation

How to vet apparel manufacturers: an 8-signal scorecard

A practical ranking of the evidence that matters—from product fit and live verification to samples, tolerances and remedy terms.

Raw-edged navy, grey and olive jersey swatches on a worn cutting table — AI-assisted illustration

Ranked guideFabric science

Best performance fabrics for men’s gym wear: a buyer-first ranking

Rank polyester, nylon, elastane blends and mesh by use case, then turn the choice into a factory-ready specification.

Matte navy and smooth grey knitted fabric samples on a sample-room table — AI-assisted illustration

ComparisonFabric science

Polyester vs nylon for activewear: which should a buyer specify?

A practical comparison of polyester and nylon/polyamide for men’s performance tops, shorts and training sets.

Hands gently stretching grey jersey fabric over a worktable — AI-assisted illustration

ExplainerFabric science

Spandex and elastane percentage in sportswear: what actually changes

Understand how stretch-fiber percentage, knit construction and garment fit interact before approving performance apparel.

Damp patch spreading on grey jersey beside a glass dropper — AI-assisted illustration

Science explainerPerformance claims

How moisture-wicking sportswear works—and what the claim does not prove

A source-conscious explanation of capillary transport, drying and the buyer tests behind moisture-management claims.

Fine sports mesh held against window daylight — AI-assisted illustration

Myth busterPerformance claims

Activewear breathability: myths, air permeability and buyer checks

Separate marketing language from air flow, vapor transfer, garment ventilation and fit.

Circular jersey sample on a small tabletop scale — AI-assisted illustration

Ranked guideFabric science

Performance T-shirt GSM guide: 180–250 g/m² ranked by use

Choose fabric weight for men’s training tees by opacity, drape, heat, durability and decoration.

Worn knit surface with pilling beside a cleaner fabric sample — AI-assisted illustration

ExplainerQuality testing

Pilling resistance in activewear: causes, tests and approval limits

A buyer-focused guide to pilling resistance, with decision tables, factory questions, sample evidence and risk controls.

Colored fabric scraps beside a stained white rubbing cloth — AI-assisted illustration

ExplainerQuality testing

Sportswear colorfastness: washing, rubbing and shade approval

A buyer-focused guide to colorfastness, with decision tables, factory questions, sample evidence and risk controls.

Washed grey T-shirt measured along its length — AI-assisted illustration

ExplainerQuality testing

Garment shrinkage and dimensional stability: a buyer measurement plan

A buyer-focused guide to dimensional stability, with decision tables, factory questions, sample evidence and risk controls.

Man wearing a long-sleeve running shirt outdoors — AI-assisted illustration

ExplainerPerformance claims

UPF sportswear claims: what buyers must verify before labeling

A buyer-focused guide to upf claims, with decision tables, factory questions, sample evidence and risk controls.

Navy training shirt air drying beside a laundry-room window — AI-assisted illustration

Evidence guidePerformance claims

Anti-odor activewear finishes: claims, durability and buyer questions

A buyer-focused guide to anti-odor finishing, with decision tables, factory questions, sample evidence and risk controls.

Yarn cones and knitted fabric roll on a stockroom shelf — AI-assisted illustration

Evidence guideResponsible sourcing

Recycled polyester claims: RCS, traceability and buyer verification

A buyer-focused guide to recycled claims, with decision tables, factory questions, sample evidence and risk controls.

Close view of seams and fit on a men's compression top — AI-assisted illustration

Technical guideProduct development

Compression sportswear construction: fabric, negative ease and seams

A buyer-focused guide to compression construction, with decision tables, factory questions, sample evidence and risk controls.

Inside seams of two turned-out navy jersey garment pieces — AI-assisted illustration

ComparisonConstruction

Flatlock vs overlock seams in activewear: where each belongs

A buyer-focused guide to seam construction, with decision tables, factory questions, sample evidence and risk controls.

Hands checking the extension of a jersey seam — AI-assisted illustration

Quality guideQuality testing

Activewear seam strength and stretch: a factory approval guide

A buyer-focused guide to seam strength, with decision tables, factory questions, sample evidence and risk controls.

Overlapping garment patterns and ruler on a sample table — AI-assisted illustration

Technical guideFit and sizing

Men’s activewear sizing and grading: from base size to S–5XL

A buyer-focused guide to men’s size grading, with decision tables, factory questions, sample evidence and risk controls.

Two men reviewing a garment and paper pattern in a sample room — AI-assisted illustration

ComparisonOEM & ODM

OEM vs ODM sportswear manufacturing: choose the right development route

A buyer-focused guide to oem versus odm, with decision tables, factory questions, sample evidence and risk controls.

Plain woven labels, garment neckline and kraft tag — AI-assisted illustration

Step-by-step guideOEM & ODM

Private-label activewear roadmap: 10 decisions from concept to repeat order

A buyer-focused guide to private-label development, with decision tables, factory questions, sample evidence and risk controls.

Men checking the sleeve fit of a training tee — AI-assisted illustration

ChecklistSampling

Sportswear sample approval: fit, movement, fabric and artwork checklist

A buyer-focused guide to sample approval, with decision tables, factory questions, sample evidence and risk controls.

Stacks of folded training tees in three colors — AI-assisted illustration

Planning guideSourcing basics

Activewear MOQ by color and size: build a quantity matrix factories can quote

A buyer-focused guide to moq allocation, with decision tables, factory questions, sample evidence and risk controls.

Decision guideCustomization

Custom logo placement on sportswear: front, back and performance zones

A buyer-focused guide to logo placement, with decision tables, factory questions, sample evidence and risk controls.

Worker checking stitching on sports shorts — AI-assisted illustration

ExplainerQuality control

AQL and final random inspection for activewear: what it can and cannot prove

A buyer-focused guide to final inspection, with decision tables, factory questions, sample evidence and risk controls.

Worker loading garment cartons into a delivery truck — AI-assisted illustration

ComparisonLogistics

Air vs sea vs express for sportswear: rank by launch risk and order profile

A buyer-focused guide to international shipping, with decision tables, factory questions, sample evidence and risk controls.

Care label inside the side seam of a grey sports tee — AI-assisted illustration

Compliance guideMarket readiness

Sportswear labels for US and EU buyers: fiber, origin, care and identity

A buyer-focused guide to sportswear labeling, with decision tables, factory questions, sample evidence and risk controls.