Fabric selection can feel deceptively simple.
A supplier sends through swatches, you touch them for all of five seconds and immediately start forming opinions. This one feels softer. That one looks more premium. Another one aligns perfectly with your sustainability story. One comes in cheaper than expected and feels like a smart financial decision.
None of those reactions are wrong. Fabric is tactile. It should evoke something.
But that first impression is only the beginning, and this is where product development gets more nuanced. A fabric can feel incredible in the hand and still pill after a few wears. It can sound sustainable on paper but require such delicate care that it frustrates customers. It can be cheaper upfront but create far bigger costs later if it loses shape, stretches out, or simply doesn’t perform the way your product needs it to.
The question isn’t “do I like this fabric?”
It’s “what does this product need this fabric to do?”
That’s usually where much better decisions start.
I think fabric conversations can become quite black and white online.
Natural fibres are often positioned as the responsible choice, while synthetic fibres are treated as the villain in every conversation. The reality is far more nuanced than that.
Synthetic fibres were originally created because natural fibres had limitations. They improved durability, stretch, recovery and ease of care in ways that many natural fibres couldn’t always achieve on their own. Of course, they’ve also played a role in the rise of cheap disposable fashion, but that’s a separate conversation.
Sometimes blending fibres genuinely creates a better product.
Take Lenzing TENCEL® Modal as an example. It feels beautiful against the skin and can align nicely with a sustainability story, but in my experience it can also be prone to pilling. Adding polyamide may improve durability, but now your sustainability messaging feels less straightforward.
That tension exists all the time in product development. You’re rarely choosing between good and bad. More often, you’re balancing competing priorities and deciding which compromise makes the most sense for your customer.
Once you move past composition, the real questions start.
How heavy is the fabric, and what does that mean for the finished product? A heavier weight might create beautiful coverage but feel restrictive on the body. A lighter fabric might feel barely there, but suddenly it’s sheer or lacks the stability the garment needs.
Stretch percentages can also be misleading when viewed in isolation. I see stretch listed on specs all the time, but modulus is often missing from the conversation.
I explain modulus very simply as: how strong is the stretch? That matters a lot in lingerie and swim. A strap elastic might stretch beautifully, but if it doesn’t have enough strength behind that stretch, it won’t provide the support the garment actually needs.
And sometimes your best point of reference is a product you already know performs well. If you already have a strap elastic that customers love, keep those details. Keep the supplier, article number and performance specs on file. Then if you want a different aesthetic later, maybe a picot edge or a softer finish, you’re not starting from scratch and hoping for the best. You’re sourcing against something you already know works.
That’s how consistency gets built over time.
Documentation isn’t the glamorous side of product development, but it can save you a huge amount of stress later.
I still see tech packs that simply say “main fabric”, which leaves a lot open to interpretation.
If a repeat order arrives and something feels different, how do you trace what changed? How do you confirm whether the factory substituted a material? How do you prove what was originally approved?
Even something as simple as recording the supplier name, article number and keeping a physical cutting of approved fabric can make life significantly easier later.
I always encourage clients to keep physical cuttings of approved fabrics attached to printed specs. It feels old-school, but those records become your source of truth when memories get fuzzy and email chains disappear into the void.
And if sustainability or certifications are part of your brand story, keep those records too. Make sure certifications are valid, up-to-date and reviewed regularly if you’re repeating the same materials season after season.
A swatch can only tell you so much.
The real answers come when that fabric is turned into a garment and put through real-life conditions.
How does it wash?
Does it twist?
Does it pill?
Does it shrink?
Does the colour hold?
You don’t need to test everything to death, but you do need enough information to make an informed decision before your customer does that testing for you.
A swatch can tell you whether a fabric catches your attention. But it can’t tell you how it will behave after repeated wear, multiple washes, long days on the body, or whether it still feels worth the price six months later.
That part only becomes clear when you test it properly, document it properly and pay attention to how it performs in real life.
Because customers don’t buy fabrics. They buy products that feel good, last well and earn a permanent place in their wardrobe.
And that all starts with asking better questions.
