A rashie is the Australian term for a rash guard: a lightweight, quick-drying shirt worn in and around the water to protect skin from sun damage and irritation. You’ll hear the word constantly at Australian beaches, pools, and school swimming carnivals. It’s as standard a piece of swim gear in Australia as a pair of goggles or a towel.
Why Australians Call It a Rashie
The full name is “rash guard,” originally designed for surfers who needed protection against the abrasion caused by surfboard wax and sandy boards rubbing against bare skin. Australians, who shorten virtually everything, turned “rash guard” into “rashie” (sometimes spelled “rashi” or “rashy”). The term is used so universally in Australia that many Australians don’t even realize the rest of the English-speaking world mostly says “rash guard” or “rash vest.”
What a Rashie Is Made Of
Most rashies are made from a blend of polyester and spandex (also called elastane or Lycra), typically around 85 to 90 percent polyester and 10 to 15 percent spandex. The polyester makes the fabric durable, quick-drying, and resistant to salt and chlorine. The spandex gives it stretch so it moves with your body in the water. The result is a garment that fits like a second skin when wet, doesn’t hold water weight, and dries far faster than cotton.
Sun Protection: The Main Reason Australians Wear Them
Australia has one of the highest rates of skin cancer in the world. Melanoma alone is the third most commonly diagnosed cancer in the country, with an estimated 17,443 new cases expected in 2025. An Australian has roughly a 1 in 19 chance of being diagnosed with melanoma by age 85, rising to 1 in 16 for men. That statistic shapes everyday behavior, and rashies are a direct response to it.
Australia and New Zealand use a UPF (Ultraviolet Protection Factor) rating system for clothing, governed by the standard AS/NZS 4399. UPF works like SPF for fabric: a UPF 50+ rated rashie blocks at least 97.5 percent of UV radiation from reaching the skin underneath. The Australian Radiation Protection and Nuclear Safety Agency (ARPANSA) classifies UPF 40 and above as “Excellent” protection. Most branded rashies sold in Australia carry a UPF 50+ rating, which is the highest label permitted under the standard.
Unlike sunscreen, a rashie doesn’t wash off in the water, doesn’t need reapplying every two hours, and doesn’t miss spots. For parents trying to keep kids protected during a long day at the beach, that reliability matters.
Tight Fit vs. Loose Fit
Rashies come in two broad styles, and the difference is more functional than cosmetic.
- Performance (snug fit): These are the classic surfer rashies. They sit tight against the body to minimize drag in the water, and many use flat-lock seams to reduce chafing during extended sessions. If you’re surfing, bodyboarding, or doing any sport where a loose shirt would catch water and slow you down, this is the style to choose.
- Swim shirts (relaxed fit): These look and feel more like a regular t-shirt. The looser cut allows better airflow, making them more comfortable for casual swimming, playing on the sand, or just sitting by the pool. They offer the same UV protection but aren’t designed for high-performance water sports.
Both styles come in short-sleeve and long-sleeve versions. Long sleeves are more common for kids and for anyone spending long hours in direct sun. You’ll also find rashies with high necklines or zip fronts for easier on and off.
Protection Beyond Sunburn
Rashies also serve as a barrier against physical irritation. Surfers originally adopted them to prevent the painful rash caused by lying on a waxed board for hours, which is where the “rash guard” name came from. They also prevent chafing from wetsuit seams, stings from jellyfish tentacles (to a degree), and scrapes from sand, reef, or pool edges. For kids especially, wearing a rashie means fewer complaints about itchy, raw skin after a day in the water.
Rashies in Australian Schools
Sun safety is built into the culture from childhood. Most Australian primary schools require SunSmart-compliant uniforms, and schools in higher UV index areas are nearly three times more likely to enforce these policies year-round compared to those in moderate UV regions. During swimming lessons and school carnivals, rashies are standard uniform items rather than optional extras. This normalizes wearing them from a young age, which is partly why Australian adults wear rashies without any self-consciousness that you might see in countries where they’re less common.
How to Care for a Rashie
Rashies are durable, but chlorine, salt, and sunscreen residue will break down the fabric over time if you don’t rinse them out. The single most important habit is rinsing your rashie in cold, fresh water immediately after every use. Cold water is gentler on the elastic fibers and more effective at removing sunscreen oils that degrade fabric.
Hand washing with a mild detergent is ideal. Machine washing introduces agitation that damages elasticity and can warp the fit. If your rashie picks up a stubborn chlorine smell, adding a tablespoon of white vinegar to the wash water helps neutralize it without harming the fabric.
Never wring a rashie out. Instead, lay it flat on a clean towel, roll the towel to press out moisture, then unroll and reshape it to air dry. Keep it out of direct sunlight while drying, which fades colors quickly, and never put it in a clothes dryer. High heat can melt the synthetic fibers and permanently ruin the garment. With proper care, a good rashie will last multiple seasons.
Where You’ll See Rashies in Australia
Essentially everywhere there’s water or strong sun. Surfers wear snug rashies under wetsuits or on their own in warm water. Families at the beach put kids in long-sleeve rashies as a first line of defense before sunscreen even comes out. Lap swimmers at public pools wear them. Lifeguards, sailing crews, kayakers, and snorkelers all wear them. You’ll even see people wearing loose-fit rashies while fishing, gardening, or watching Saturday sport from the sidelines. In Australia, a rashie isn’t niche sporting equipment. It’s a basic part of how people manage life under some of the most intense UV radiation on the planet.