UPF vs SPF: What's the Difference and Why It Matters in Australia
Australians know SPF from sunscreen bottles, but UPF — the rating on sun protective clothing — is less understood, even though clothing is the first line of sun defence recommended by Australian health authorities. Here's the difference in plain terms.
SPF rates sunscreen, UPF rates fabric
SPF (Sun Protection Factor) measures how long sunscreen delays UVB burning. It needs reapplying every two hours, washes off in water, and most people apply far less than the tested amount.
UPF (Ultraviolet Protection Factor) measures how much UV radiation passes through a fabric — and it covers both UVA and UVB. A UPF 50+ fabric allows less than 1/50th of UV through, meaning it blocks around 98% of ultraviolet radiation. Unlike sunscreen, it doesn't wear off, can't be applied too thinly, and works the moment you put it on.
What UPF 50+ actually means
UPF 50+ is the highest rating under the Australian and New Zealand standard (AS/NZS 4399), the same standard our garments are rated against. The protection comes from the weave density, fibre type and construction of the fabric — not a coating — so it lasts the life of the garment through swimming and washing.
Why clothing first, sunscreen second
Skin cancer authorities recommend the five-step approach: Slip on clothing, Slop on sunscreen, Slap on a hat, Seek shade, Slide on sunglasses — and clothing comes first for a reason. A long sleeve rash vest protects reliably for hours in and out of the water, with no reapplication. Sunscreen then covers what clothing can't: face, neck, hands and feet.
Where UPF clothing makes the biggest difference
Anywhere exposure is long and reapplying sunscreen is impractical: kids at swimming lessons (kids' UV swimwear), surfing and snorkelling, boating and fishing, gardening and outdoor work (UV gloves and arm sleeves), and long drives — UV penetrates car windows.
Browse our full range of UPF 50+ sun protective clothing, designed for the Australian sun with free shipping over $100.