Terra Form Fitness Portugal: Seamless Gym Sets Built on Interlock Recycled Nylon

Terra Form Fitness is a growing Portugal-based activewear label whose seamless gym sets range now anchors its seasonal offer. When the design team planned a wider range with tighter launch dates, it needed a fabric partner able to guarantee construction consistency, documented performance and shade continuity across every production lot.

Terra Form Fitness: reviewing the fabric swatch set for the seamless gym sets programme

The challenge

The main risk in the project was unsupported performance claims without lab data. The previous supply chain ran through a trading intermediary, so there was little visibility of the mill, no construction sheet and no test evidence behind the performance claims. Without that documentation the brand could not brief its retail partners with confidence.

The solution

We proposed a dedicated interlock recycled nylon programme built around third-party testing to AATCC and ISO methods before launch. Development started with A4 lab dips and a full construction sheet covering fibre content, GSM, width, stretch and recovery, and colour fastness. Only after the brand approved hand feel and performance targets did the project move to a pre-production lot for fit sampling.

Sample and fit approval for the interlock recycled nylon construction

Implementation

• Development: lab dips and physical samples in 5 working days.
• Approval: colour, hand feel and stretch signed off in two rounds.
• Bulk: consolidated dye lots to hold shade continuity.
• QC: inline inspection plus final random inspection before packing.
• Testing: AATCC 79 absorbency on every bulk lot.

Specification delivered

Results

The new interlock recycled nylon programme helped Terra Form Fitness raised the opacity rating to fully squat-proof under test. The seamless gym sets line launched on schedule, and wash durability, opacity and fit consistency all held up through the first retail season. The brand has since extended the programme into additional colours and styles.

“The development process was transparent from the first sample. We finally had the data we needed to brief our retail partners with confidence.” — Terra Form Fitness Product Team

Inline inspection and packing before the seamless gym sets shipment

Key takeaway

Moving from a trading model to mill-direct development removed the hidden risks in the supply chain. With documented construction, controlled shade management and inline quality control, Terra Form Fitness could concentrate on design and marketing instead of firefighting production issues.