Lycra's real benefit is not stretch — it is recovery. Plenty of knits stretch on their own; what a few percent of elastane adds is the ability to come back to shape afterwards, wash after wash. That single property is what stops knees bagging in leggings, cuffs going slack, and a fitted t-shirt turning into a loose one by the third wear.
Are lycra, elastane and spandex the same thing?
Lycra is a brand name. The generic fibre is elastane in Europe and spandex in North America. On a composition label you will see "elastane"; in conversation buyers say lycra. There is no technical difference implied by the word choice.
What is the difference between structural stretch and elastane stretch?
This is the distinction that decides whether a garment holds up:
- Structural stretch — comes from the knit loops themselves. A rib knit or an interlock stretches because the loops can extend. It has limited recovery: pull it repeatedly and it gradually stays extended.
- Elastane stretch — comes from a fibre that behaves like a spring. It returns. This is what you are buying when you pay more for a lycra blend.
A fabric can have both. When you are quoted a "stretch jersey", ask which kind you are getting, because the price difference is real and so is the performance difference.
How much elastane do you actually need?
| Elastane % | Behaviour | Fits |
|---|---|---|
| 2–3% | Slight give, mostly comfort | Shirts, relaxed tops |
| 5–8% | Four-way stretch with firm recovery | T-shirts, fitted basics, children's wear |
| 8–12% | High compression, strong return | Leggings, sportswear, shapewear |
| 15%+ | Very high compression | Support panels, medical wear |
More is not better. Above roughly 12% the fabric gets harder to cut and sew accurately, and the garment can feel restrictive rather than supportive.
Which stretch fabrics do we stock?
Our lycra jersey (likralı süprem) runs 92% cotton / 8% elastane in two weights — 170–180 g/m² and 190–200 g/m² — at 180–185 cm width. The 8% ratio is the workhorse: enough recovery for fitted garments, still comfortable and still cuttable at speed. Scuba, at 250 g/m² and 160 cm, is a 92% polyester / 8% elastane double knit — the same elastane ratio in a very different structure, which is what gives it body instead of cling.
Where does lycra fail?
Elastane has three enemies, and all three are avoidable:
- Heat — hot washing, hot tumble drying and a hot iron all degrade the fibre permanently. Wash at 30 °C, dry flat or on low, iron on a moderate setting.
- Chlorine — bleach destroys elastane. This is why ordinary lycra swimwear loses shape in a chlorinated pool and why pool-specific fabrics use chlorine-resistant elastane.
- Oil-based softeners — they coat the fibre and reduce recovery over time.
A garment that "lost its stretch" has almost always been washed too hot rather than worn out.
What should you check when buying lycra fabric?
Minimum order is 50 kg per colour with 2–5 business day delivery on stock colours. Ask for a stretch-and-recovery sample rather than a flat swatch: pull it 50% and let go, five times, and watch whether it returns to its original length. That test tells you more than the composition label does.