When to Bring a Soft Goods Expert into Medical Product Development

“We’ll Figure Out the Fabric Later”....

... Every soft goods engineer has been traumatized by this phrase at some point in their career: “We’ll figure out the fabric later.” It sounds harmless enough until “later” turns into failed usability tests, blown budgets, and last-minute scrambles to meet regulatory standards. Textiles may look simple, but they’re some of the most complex engineering systems in medical product design. They stretch, shrink, breathe, absorb, and react; often in ways CAD models and rigid prototypes can’t predict.

Involving a soft goods specialist too late means decisions about comfort, manufacturability, and compliance are already locked in. By then, fixing a small design oversight (a seam that digs, a fabric that delaminates, a strap that doesn’t stay put) can require a full rework. Worse, these problems rarely show up until human testing, when change is most expensive and most public.

This post maps out when textile expertise adds the most value across a medical device’s development cycle, from early sketches to design transfer. Because waiting to “figure it out later” almost guarantees one thing, you’ll figure it out the hard way.

Reviewing Fabric Swatches / Stock Image by Vecteezy

The Four Phases Where Textiles Matter Most

Textiles don’t belong to one stage of product development, they thread through all of them. From first sketch to production hand-off, the earlier fabric considerations enter the conversation, the fewer surprises appear downstream. Here’s where soft-goods expertise has the biggest impact.

1. Concept Development — Set the Foundation Right

At this stage, ideas are big and details are fuzzy. But early assumptions about shape, stiffness, and comfort are already forming. A soft-goods expert can quickly flag what’s feasible and what’s fantasy: Can this actually exist as imagined? They translate napkin sketches into something the body could realistically wear and move in. Even basic input on stretch direction or seam placement can prevent major ergonomic headaches later.

2. Feasibility and Early Prototyping — Design Meets Anatomy

This is where drawings meet reality, and reality always wins. CAD models don’t drape, stretch, or wrinkle like fabric does. Early prototypes reveal how materials behave against skin, how tension distributes, and how easily the product can be donned or doffed. Skipping textile input here often leads to “non-functional prototypes”, beautiful in slides but miserable in use. It doesn’t matter how well you think your product works; if the end user refuses to wear it, it’s essentially useless. Getting it right now saves multiple iterations later.

3. Verification and Validation — When Testing Gets Serious

Once testing begins, every oversight gets more expensive. Material inconsistencies can derail biocompatibility, patient data collection, or sterilization. A textile specialist helps define the right test methods, determine appropriate material tolerances, and ensure performance holds up under real-world conditions. At this stage, even small changes trigger new documentation, so it’s better to prevent them altogether.

4. Design Transfer and Manufacturing — Where Success Scales

A prototype is proof of concept, not proof of process. Manufacturing introduces new variables: seam tolerances, lamination pressure, build optimization for mass-manufacturing. Each can end up impacting product functionality. Soft-goods engineers bridge the gap between prototype and production, validating stitch types, bonding settings, and quality checks so every unit performs like the first.

Lessons from a Missed Opportunity

When textile decisions go wrong, they don’t just delay production; they can shape medical history. Few examples illustrate this better than the case of transvaginal mesh, once promoted as a breakthrough for pelvic organ prolapse repair. The idea was simple: a permanent woven or knitted polypropylene mesh that would reinforce weakened tissue and reduce recurrence.

Unfortunately, the fabric didn’t behave the way engineers or surgeons expected. Variations in mesh stiffness, pore geometry, and edge finishing caused pain, erosion, and infection for thousands of patients. Even small inconsistencies between batches changed how tissue integrated, leading to unpredictable biological responses. What looked like a standardized product on paper was, in practice, dozens of subtly different textiles.

By 2019, the FDA concluded that safety and effectiveness for this application were “not well established” and ordered manufacturers to halt U.S. sales. Re-engineering those devices wasn’t a matter of tweaking polymer chemistry. It required redefining the entire textile architecture; from knit density to surface finish to load distribution.

The lesson is simple: material selection isn’t enough. Textile structure is design, and its mechanical and biological behavior must be engineered as deliberately as any circuit or frame. Once a product reaches market, those choices can’t be undone without starting over; and for patients, that’s far too late.

Building an Integration Workflow

Getting textiles right isn’t luck, it's a process. The most successful medical products treat soft goods as a design stream that runs in parallel with mechanical, electrical, and human-factors engineering. When that integration starts early, every stage moves faster and costs less to correct.

A practical workflow doesn’t need to be complicated. It starts with an initial consultation during concept development, even if the design is still a sketch. A quick feasibility check can flag impossible geometries or unrealistic comfort assumptions before you’re past the point of easy fixes. From there, regular check-ins during feasibility and prototyping keep the physical reality of the product aligned with its digital intent.

Before design freeze, a final textile review ensures manufacturability, sterilization compatibility, and regulatory traceability. This step catches the small inconsistencies that become big expenses later, like a bonding process that alters stretch, or a supplier change that shifts coating chemistry.  In short: build collaboration in from the start. The earlier soft-goods specialists are part of the loop, the fewer course corrections you’ll need. It’s easier (and cheaper) to adjust a sketch than to recall a product.

The Hidden Cost of “Later”

The idea that you can “figure out the fabric later” sounds great in theory, but it falls apart in practice. And by the time it does, patterns are locked, testing is underway, and every small fix sets off a domino chain of documentation, delays, and rework. The farther a project moves without textile input, the more expensive each correction becomes.  Early textile collaboration isn’t about overcomplicating design; it’s about removing unknowns. The same way electrical engineers wouldn’t finalize a circuit before knowing the voltage, product teams shouldn’t finalize geometry before understanding how the fabric will behave.

Integrating soft goods experts early keeps ideas grounded, testing predictable, and manufacturing repeatable. It’s the difference between a product that passes validation once and one that passes every time. Because in medical product development, “later” isn’t just a timeline, it’s a liability.