UPF and SPF often appear in the same conversation, but they describe different things. UPF is used for clothing and fabric, while SPF is the rating used for sunscreen. The simplest way to remember the difference is that a UPF garment covers skin; sunscreen is for the areas that remain exposed.
It is not an either-or choice. A sensible plan for a sunny day combines several habits: check the UV Index, use shade, wear clothing and a hat, and apply suitable sunscreen to uncovered skin.
What does UPF mean?
UPF stands for Ultraviolet Protection Factor. It is the rating used for the UV protection provided by a garment or fabric. UPF 50+ is the highest protection category for clothing.
The number is not the only practical consideration. A garment should cover the areas you want to protect, fit properly and feel comfortable enough to wear. Long sleeves cover the shoulders, arms and torso—areas that can otherwise be easy to miss or inconvenient to reapply sunscreen to during a family day out.
Explore the OakCrew UPF 50+ collection
What does SPF mean?
SPF is a sunscreen rating. Sunscreen is used on skin that clothing does not cover, commonly the face, ears, neck, hands and legs. Follow the instructions on the specific product and reapply as directed, especially after swimming, heavy sweating or towel drying.
Sunscreen should not be used as a reason to remain in strong sun for longer. The World Health Organization recommends combining shade, clothing, a hat, sunglasses and sunscreen instead of relying on one measure alone.
UPF vs SPF at a glance
| UPF clothing | SPF sunscreen | |
|---|---|---|
| Applied to | A garment or fabric | A product used on skin |
| Protects | The skin covered by the garment | Exposed skin |
| Remember | Choose the right fit and useful coverage | Apply enough and reapply as directed |
| Enough on its own? | No—some areas remain exposed | No—clothing and shade still matter |
Does UPF clothing replace sunscreen?
No. A long sleeve does not cover your face, ears or hands. Those areas still need sunscreen and, where possible, shade. A broad-brimmed hat and sunglasses with UV protection also belong in a complete sun-safety routine.
For swimming or active water sports, choose a technical garment designed for that use and check the manufacturer’s information about performance when wet. OakCrew cotton and bamboo-viscose long sleeves are everyday outdoor garments; we do not describe them as technical swim tops.
When should you check the UV Index?
Make the UV Index part of checking the weather, even on cool or cloudy days. It helps you decide when more protection is needed and whether active plans would be better earlier in the morning or later in the afternoon.
Water, sand and other bright surfaces can add reflected UV exposure. At the beach or on the water, do not judge UV only by the temperature or how cool the wind feels.
A five-question sunny-day check
Before heading outside, ask:
- What is today’s UV Index?
- Will there be shade or somewhere to take a break indoors?
- Do our clothes cover shoulders and arms?
- Do we have hats and sunglasses?
- Have we packed sunscreen for exposed skin?
That small routine makes sun protection part of getting ready, rather than one more job to remember after you arrive.
The OakCrew approach
We make one simple layer for family days outside, with fits for women, men and children. The fabric is 52% cotton, 43% bamboo viscose and 5% elastane. Every product page includes exact garment measurements, so you can compare the fit with a long sleeve you already enjoy wearing.
