Decide what you are actually buying first
Before you compare factories, get clear on the product you want, because the right manufacturer for a $12 ex-works daily trainer is rarely the right one for a $40 premium-knit flagship. Write down the construction you are targeting: upper type (engineered mesh, knit, synthetic), midsole foam and density, outsole compound and coverage, and the target landed cost. A loose brief gets you loose quotes that are impossible to compare.
Also separate OEM from ODM in your own head. OEM means the factory builds to your design and tech pack and you own the design. ODM means you start from one of the factory's developed base styles and adapt material, colour, branding and details. ODM is faster and cheaper for a first line; OEM gives full design ownership but needs more tooling and more of your engineering input. Our OEM/ODM development page breaks down where each route makes sense.
Match factory capability to your category
The single biggest predictor of a smooth project is category fit. A factory that makes running and training shoes every day understands flex grooves, last shape for forefoot strike, midsole rebound and breathable upper zoning. A generalist that mostly makes boots or sandals can quote your running shoe, but the design-for-manufacture feedback will be weaker and the first sample will show it.
Ask direct questions: What do you make most by volume? Have you built this exact construction (for example mesh upper + dual-density EVA + blown rubber pods) before? Can you handle the upper branding method I need? A capable partner answers specifically and may push back on parts of your spec, which is a good sign, not a bad one. If you are still scoping the build, our running shoes page lists the upper, midsole and outsole options that are realistic at volume.
Judge them on the sample, not the sales pitch
The sample is the truth test of an OEM relationship. A factory that says yes to everything is telling you they will discover the problems in bulk, on your money. A good partner gives honest DFM feedback at sampling: this midsole density will pack out faster than you want, this overlay placement will wrinkle, this colour will not hold on mesh, this target cost needs a simpler upper.
What to expect from a serious sampling process:
- A costed sample plan tied to a defined construction, not a vague promise.
- A physical development sample in roughly 15 to 25 days, depending on tooling and material availability.
- One or more revision rounds on fit, materials and finish.
- A signed golden sample that becomes the written definition of bulk quality and the reference for inspection.
Treat the sample fee as cheap insurance. Paying for tooling and a proper sample round is far less expensive than discovering an unmanufacturable design after you have committed to 3,000 pairs.
Understand MOQ and the real cost drivers
Most custom running shoe MOQs land around 500 pairs per design and colorway, because each style needs its own cutting dies, last and outsole tooling that only amortise above a minimum quantity. Do not be surprised if a factory quotes per colorway rather than per style; splitting one order across five colours can multiply your effective minimum.
Unit cost is driven by materials (upper, midsole, outsole, lining), construction complexity, branding method, order quantity and packaging. A knit upper costs more than mesh; full solid rubber costs more and weighs more than blown rubber pods; embroidery and woven labels cost more than a single-colour heat transfer. For the full breakdown and how to lower cost without cheapening the shoe, read our shoe MOQ and pricing guide.
Confirm quality control is verifiable, not just claimed
Anyone can say they care about quality. What matters is whether their process is documented and whether they will let an outsider check it. Ask how they inspect at each stage: incoming material verification, a first-article check at the start of the run, in-line QC during production, and a final inspection to an agreed AQL (commonly 2.5 for major defects and 4.0 for minor).
A trustworthy factory welcomes third-party inspection from agencies like SGS, BV or Intertek and will coordinate access for your inspector. Be wary of any supplier that resists independent QC on a first order. Walk the same checks the inspector will run by reading our shoe quality inspection checklist, and review how a structured process should look on our quality page.
Test communication before you commit
The way a factory handles your RFQ predicts the whole relationship. Send a detailed brief and watch what comes back. Do they answer your actual questions or send a generic catalogue? Do quotes and clarifications arrive within a business day or two? Do they flag risks proactively, or only after you ask? Slow, vague responses during courtship rarely improve after you have paid a deposit.
Look for a single accountable contact who understands both the commercial and the technical side, ideally someone who can speak to lasts and material substitutions, not only price. Clear English (or your working language), realistic timelines and a willingness to say no to a bad idea are worth more than the lowest quote.
Trading company, agent or direct factory?
Who you are actually talking to changes the project as much as which factory you pick. Most buyers meet three kinds of supplier on a sourcing platform, and each has a place.
- Direct factory: the people who own the lasts and run the lines. You get the most accurate DFM feedback, the tightest control over substitutions, and usually the best price at volume, because there is no middle margin. The trade-off is that smaller factories may have weaker English and less polished sales handling.
- Trading company: a sourcing intermediary that places your order with one or more factories. They can be genuinely useful for coordinating multi-factory ranges, handling export paperwork and smoothing communication, but you pay a margin and you are one step removed from the bench, so DFM answers can be slower and less precise.
- Sourcing agent: works on your behalf for a fee or commission, finds and manages factories, and runs QC. Useful when you have no China presence, but verify whose interests they actually serve.
None of these is automatically right or wrong. What matters is knowing which one you are dealing with, because it tells you where the technical knowledge and the real cost control sit. Ask directly: do you own the production lines, and can I visit or video-call the floor? A direct factory answers yes without hesitation. Our about page sets out how we work as a direct manufacturer.
A worked example: comparing two quotes
Numbers make the trade-offs concrete. Imagine you send the same brief, a mesh-upper daily trainer at roughly $13 to $15 target landed, to two factories and get two quotes. Factory A quotes $11.50 ex-works; Factory B quotes $13.20. The instinct is to take A, but the quote alone tells you almost nothing until you normalise the construction.
On a closer read, Factory A's quote assumes a thinner single-density EVA midsole, a TPR (rather than rubber) outsole, a single-colour heat-transfer logo and a generic box. Factory B's quote uses a dual-density EVA midsole, blown-rubber pods at the wear zones, a woven heel label and a printed retail box, closer to the shoe you actually described. Once you ask Factory A to match Factory B's spec, the gap narrows or reverses, and the cheap headline price was really a different, cheaper shoe.
This is why a like-for-like construction sheet matters more than a price list. Send every factory the same bill of materials, the same branding method and the same packaging, and insist quotes are returned against it line by line. Then the comparison is real, and a genuinely lower price reflects efficiency rather than a quiet downgrade. The full set of cost drivers is in our MOQ and pricing guide, and the upper and sole choices that move the price most are covered in mesh vs knit uppers.
Red flags and a short pre-commit checklist
Some warning signs are worth treating as deal-breakers: a refusal to provide a costed sample, pressure to skip the golden sample, resistance to third-party inspection, quotes that ignore your stated construction, and prices that are dramatically below every other quote (usually a sign of substituted materials later).
Before you commit a deposit, confirm you have: a defined tech pack or agreed base style, a signed golden sample, a written AQL and inspection plan, agreed Incoterms and lead times, an NDA if you are sharing original designs, and clarity on tooling ownership. Get those in writing and your first OEM running shoe order has a real chance of matching what you imagined. When you are ready, send the brief through our request a quote form so the response comes back against your actual construction.
Key takeaways
- Define the construction and target cost before comparing factories, so quotes are comparable.
- Pick a factory that makes your category daily; category fit drives better DFM feedback.
- Judge partners on the sample and their willingness to push back, not on the sales pitch.
- Expect ~500 pairs MOQ per design/colorway; cost is driven by materials, build and branding.
- Insist on verifiable QC: documented stages, an agreed AQL, and welcome third-party inspection.
- Lock a golden sample, an inspection plan and Incoterms in writing before paying a deposit.