Switching Suppliers: Run Both for One Order

Short answer: to switch apparel suppliers safely — qualify and sample the new factory while the old one is still producing, migrate your full specification and artwork, place one overlapping order with both suppliers running in parallel, and only then wind down the old relationship. Never cut ties before the new supplier has proven itself with a real production run.

Supplier changes are sometimes necessary: quality declined, prices rose, lead times slipped, capacity is needed, or the relationship broke down. But a badly managed switch can cost a season. This guide covers the transition.

Decide First: Fix or Switch?

Before switching, ask whether the problem is fixable:

Switching is slow and expensive; a fix is fast. Switch when the problem is structural — capability, ownership, compliance or repeated failure — not when it is a temporary or negotiable issue.

Step 1: Qualify the New Supplier Before You Need Them

Start the search while your current supplier still delivers:

This takes weeks; beginning early is the whole point.

Step 2: Migrate the Specification Completely

Most failed switches lose quality in the handover. Transfer everything:

A new factory starting from an incomplete pack will produce a different product.

Step 3: Sample and Approve Rigorously

The new supplier must reproduce the quality, not approximate it:

Approve in writing, with a physical retained sample kept on both sides.

Step 4: Run Both Suppliers in Parallel

This is the step most buyers skip and later regret:

An overlap costs more for one order but protects your season.

Step 5: Wind Down Cleanly

When the new supplier has proven itself:

Risks to Manage in the Transition

A Practical Timeline

For seasonal programs, start at least a full season ahead.

Conclusion

Switching suppliers is a structured transition, not an abrupt break. Qualify early, migrate the full specification, sample rigorously against your existing product, overlap one production run, and only then wind down. Managed this way, a supplier change improves your supply chain instead of threatening it.

Key Takeaways for Buyers

If you are costing this right now

Send the tech pack with three things pinned down: the GSM, the fibre composition and the wash requirement. Those three decide the quote more than anything else, and they cost nothing to get right. Everything else on a quote can be negotiated later. Those three cannot be guessed later.