Ironroot Performance Finland: Hotel Spa and Wellness Programme Climate and Heat Evaluation
Ironroot Performance is a Finland-based brand whose hotel spa and wellness programme is one of its most demanding programmes. Heat changes how a fabric behaves, so we evaluated the brushed thermal knit in genuinely hot conditions for Ironroot Performance, based in Finland.
Ironroot Performance: Brushed Thermal Knit in use during spa, sauna and relaxation areas
Evaluation background
The programme covers robes, wraps and light loungewear, used for spa, sauna and relaxation areas. The environment is humid environments with frequent hot washing and the requirement written into the brief was a soft hand that survives commercial laundry. Fabric was selected on that basis rather than on price alone.
Fabric under evaluation
| Parameter | Value |
|---|---|
| Fabric | Brushed Thermal Knit |
| Composition | 92% polyester / 8% spandex, brushed back |
| Weight | 300 GSM |
| Width | 175 cm |
| Primary function | traps warm air without adding weight |
| Target | thermal resistance above 0.08 m2K/W |
| Test method | ISO 11092 |
| Additional note | warmth held after 30 washes |
| Certification | OEKO-TEX Standard 100 |
Brushed Thermal Knit close-up showing the fabric surface
Test environment
Sessions ran at 30 to 34 degrees with high humidity, which is the condition where sweat cannot evaporate and complaints begin. Garments were weighed before and after each session to measure retained moisture.
Thermal behaviour
The fabric held thermal resistance above 0.08 m2K/W, and skin temperature stayed below the control fabric across the session. That difference is what a wearer describes simply as feeling cooler.
Evaluation session with the Ironroot Performance team
Drying after the session
Garments were re-weighed at 30 and 60 minutes. The fabric released most of its moisture within the first half hour, which matters when Ironroot Performance runs back-to-back sessions.
Comfort feedback
Wearers reported less cling and less chafe during spa, sauna and relaxation areas. Both improvements come from moving moisture rather than storing it, which is why construction mattered more than any finish in this test.
Test records and inspection notes for the Hotel Spa and Wellness Programme
Scorecard
| Criterion | Result |
|---|---|
| Heat comfort | 4.7 / 5 |
| Moisture transport | 4.4 / 5 |
| Drying speed | 4.8 / 5 |
| Cling and chafe | 4.6 / 5 |
| Odour control | 4.5 / 5 |
“Our athletes noticed the difference in the first week, and the test data explained why.” — Ironroot Performance Technical Team
Packed bulk rolls before shipment to Finland
Verdict and recommendation
For hot and humid markets the brushed thermal knit is the right choice, provided the pattern keeps the ventilation zones exactly where we placed them. For Ironroot Performance the practical next steps are to keep the current specification for the repeat, retain the shade standard, and issue ISO 11092 results with every lot so any claim can be supported with data.
