Ever wondered why a trainer feels lighter after ten kilometres than it did on step one? Smart textiles are the reason. Sportswear brands now weave breathable knits and rebounding foams into the fabric itself, turning a plain shoe into sports tech. Asics built its name on cushioned foam soles, and Adidas leans on knitted uppers spun from recycled yarn. Here’s what tech-driven fabric changes for a shopper.
Knitted Uppers, Mesh and Recycled Yarns
The upper part is where most of the tech sits. Adidas uses Primeknit and Primeblue uppers, knitted from recycled ocean plastic, giving a sock-like fit on styles such as the UltraBoost range. Samba and other Originals sneakers stick with suede and canvas panels instead, built for a slower pace rather than a sprint.
Asics takes a different route with engineered mesh panels across the Novablast and Gel-Nimbus ranges, using looser weaves near the toes for airflow and tighter knit near the heel for a snug lock. You get colour options from triple black and cloud white to citrus orange and teal.
- Recycled knit uppers: Lighter, stretchier, moulds to the foot over time
- Engineered mesh: Zoned ventilation for cooler feet on longer runs
- Suede and canvas panels: Sturdier for regular wear, less stretch
Foams That Respond to Every Step
Midsole foam is the second layer that matters. Adidas Boost is made of thousands of fused capsules that compress and spring back, giving a bouncy feel across Ultraboost and several training shoes. Lightstrike foam sits in the firmer, race-day styles instead.
Asics pairs FlyteFoam with Gel cushioning, a softer pocket placed at the heel and forefoot to soak up impact on every stride. The result sits somewhere between plush and snappy, depending on the model.
| Fabric Tech | Asics | Adidas |
| Upper material | Engineered mesh | Primeknit / Primeblue |
| Foam type | FlyteFoam, Gel | Boost, Lightstrike |
| Best suited for | Long runs, training | Training, gym-to-street looks |
Picking the Right Tech Fabric for Your Routine
Matching the fabric to the activity makes more difference than picking by look alone:
- Best for marathon training: Engineered mesh with gel cushioning, seen across several Asics running styles.
- Best for gym-to-street wear: Primeknit uppers with Boost midsoles, a strong point across the Adidas sneaker range.
- Best for casual regular wear: Suede or canvas uppers with firmer foam, holding shape through repeated wear without needing a break-in period.
To Wrap Up
Smart fabric choices come down to how you’ll use the shoe, whether that’s a long run, gym sessions or a regular commute. AJIO stocks 1000+ styles from Asics built around foam cushioning, alongside 1100+ Adidas styles spanning knitted uppers and street-ready builds. Browse the range and find a pair that suits your pace.
FAQs
- What makes a knitted upper different from a standard fabric upper?
A knitted upper kind of stretches to match the foot shape, stitched fabrics stay with a fixed form, so they usually need longer break-in time.
- Does foam cushioning wear out over time?
Yes, foam compresses gradually with impact, so most running shoes are best replaced every few hundred kilometres.
- Are recycled yarn uppers as sturdy as standard ones?
Recycled yarns now hold up as well as standard synthetic yarns, though wear rate depends on the shoe’s build.
- Will my mesh uppers bear a lot of rain?
Mesh dries fast, but it will not block water completely. So, if you add a water-resistant coating, it can help bear the rains better.
- Why do some trainers feel stiff when you are trying them for the first time?
More firm foams and structured uppers usually need a few wears to relax a bit and settle around the foot.