Lumenfield Norway: Swim School Programme Cost and Performance Evaluation
Lumenfield is a Norway-based brand whose swim school programme is one of its most demanding programmes. This evaluation answers the commercial question behind the swim school programme programme for Lumenfield: does the performance justify the price?

Lumenfield: Recycled Nylon Interlock in use during daily pool sessions for children and adults
Evaluation background
The programme covers training swimsuits, swim shorts and rash guards, used for daily pool sessions for children and adults. The environment is chlorinated water and repeated drying cycles and the requirement written into the brief was chlorine resistance with reliable shape retention. Fabric was selected on that basis rather than on price alone.
Fabric under evaluation
| Parameter | Value |
|---|---|
| Fabric | Recycled Nylon Interlock |
| Composition | 78% GRS recycled nylon / 22% spandex |
| Weight | 280 GSM |
| Width | 175 cm |
| Primary function | stays fully opaque under tension while carrying a recycled claim |
| Target | opacity above 96% at 30% extension |
| Test method | AATCC 183 |
| Additional note | GRS chain of custody documents |
| Certification | OEKO-TEX Standard 100 |

Recycled Nylon Interlock close-up showing the fabric surface
Cost structure
The fabric adds a defined amount per garment, with testing and documentation included. Against the retail price of the product the impact on margin is small and predictable.
Performance delivered
The measured result is opacity above 96% at 30% extension against AATCC 183. That is the value the customer pays for, and it is the element that can be defended in a product page claim.

Evaluation session with the Lumenfield team
Risk avoided
The comparison that matters is not fabric to fabric but season to season. The previous year carried a return rate driven by complaints under chlorinated water and repeated drying cycles, and that cost dwarfed the fabric premium.
Commercial outcome
The programme launched on time, sold through as planned and moved into repeat. Two further colourways were added without new development cost, because the recipe was already documented.

Test records and inspection notes for the Swim School Programme
Scorecard
| Criterion | Result |
|---|---|
| Performance per cost | 4.4 / 5 |
| Claim support | 4.9 / 5 |
| Return risk | 4.5 / 5 |
| Development cost | 4.7 / 5 |
| Repeat potential | 4.3 / 5 |
“Fifty washes later the fabric still performs. That is what convinced our buying team.” — Lumenfield Technical Team

Packed bulk rolls before shipment to Norway
Verdict and recommendation
The recycled nylon interlock delivers measurable value for its cost. We recommend keeping it in the range and extending it into adjacent styles. For Lumenfield the practical next steps are to keep the current specification for the repeat, retain the shade standard, and issue AATCC 183 results with every lot so any claim can be supported with data.