Proof
We only say a shirt protects you after a lab has measured it. Here is who measures, how, and what the numbers mean.
Who tests our fabric
We use ARPANSA, the Australian Radiation Protection and Nuclear Safety Agency. It is a government lab, and it rates sun-protective clothing against the Australian and New Zealand standard, AS/NZS 4399:2020. ARPANSA fabric testing
What the rating means
UPF stands for Ultraviolet Protection Factor. It tells you how much of the sun's UV gets through a fabric. A fabric rated UPF 50 lets through about one fiftieth of the UV that reaches it.
| Rating | What the standard calls it |
|---|---|
| UPF 15 | Minimum protection |
| UPF 30 | Good protection |
| UPF 50 and 50+ | Excellent protection |
Source: ARPANSA, Australian sun protective clothing
How we test, step by step
- The fabric arrives in Manila.
- We post a sample to ARPANSA in Australia.
- The lab measures it. This takes about 10 business days.
- We publish the result and the report number on this page.
- The report number and a QR code go on every hangtag.
A new fabric or a new print means a new test.
Our results
| Fabric | Used in | Result |
|---|---|---|
| Lightweight woven nylon, Vanilla | Batangas Shirt | Due late November 2026 |
Until a result is listed here, we make no UPF claim for that fabric.
What a rating does not cover
A shirt only protects the skin it covers. Use a hat, sunglasses and sunscreen on the rest. Fabric that is stretched, wet or worn thin can let more UV through, so replace a shirt when it wears out.