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What is UPF?

UPF stands for Ultraviolet Protection Factor and indicates how much of the sun’s UV rays are absorbed by the fabric before it reaches your skin. A UPF rating of 50 means that only 1/50th (or 2 %) of the UV radiation (both UVA and UVB rays) can penetrate fabric. UPF indicates how effective the clothing is from blocking UV rays.

What is the difference between UPF and SPF?

SPF stands for Sun Protection Factor and is used for rating sunscreens and other sun-protective products. It measures the amount of time it takes for sun-exposed skin to redden. Meanwhile, UPF measures the amount of UV radiation that penetrates a fabric and reaches the skin.

Doesn´t my cotton t-shirt protect me from sun UV rays?

An average cotton t-shirt may not safeguard you at the beach. When dry, a white cotton t-shirt only provides an ultraviolet protection factor (UPF) of 5-7*. And when wet from the pool, the protection level drops to about UPF 3, exposing us to UV radiation we may be unaware of.

OCOI swimwear has a UPF50+ certification meaning that it blocks 98% of UV rays wet or dry.

Since UV damage is cumulative and irreversible, starting kids and teens with UPF clothing provides the best option when it comes to outdoor activities. With ultra-soft fabrics, like our bodysuits and rash guards we can keep ourselves and our children sun safe all year-round.

*Source: The Skin Cancer Foundation



 Do you make sizes for babies?

Our smallest size, size one, can fit babies starting at 6 months. We recommend this size for children ages 6 to 18 months

What size should I buy?

We are true to size. Although, as you know all bodies are so unique. Please visit our sizeguide, for specific measures.

We suggest below a general guideline:

- Size 1year: 6 months – 18 months

- Size 2years: 18months - 2.5years

- Size 3-4 years: 2.5years - 4.5years

- Size 5-6 years 4.5years - 6.5years

- Size 7-8 years: 6.5years - 8.5years


If you’re on the fence about sizing, we suggest going up a size so the suit can last a little longer.