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A full-body suit can reduce the need for sunscreen on covered skin, but it does not protect you from heat exhaustion. You can still overheat when air temperatures are high, humidity limits sweat evaporation, or you exercise vigorously.

Take breaks in shade, drink water regularly, and remove or loosen the suit when you leave the water if conditions allow. Avoid thick thermal suits for casual swimming in warm water. Watch for headache, dizziness, nausea, unusual fatigue, heavy sweating, or confusion; stop activity and cool yourself promptly if these symptoms appear.

Keep your head, neck, and face protected with shade or a suitable hat, since a swimsuit alone leaves those areas exposed.

Choosing and Using Swimwear Safely

Choose swimwear with verified UPF protection, enough coverage, and a comfortable fit. Pair it with sunscreen, shade, and heat-management habits, then care for the fabric properly so its protective performance lasts.

Selecting the Right Material

Look for a UPF 50+ rating from a reputable manufacturer. UPF measures how much ultraviolet radiation fabric blocks; UPF 50 allows about 1/50 of UV radiation to reach covered skin. A rating provides more reliable protection than fabric color or thickness alone.

Choose tightly woven synthetic fabrics, such as polyester or nylon, especially when the garment includes a tested UPF rating. Select long sleeves, a high neckline, and swim leggings or full-length coverage if you want to reduce exposed skin. The material should fit closely without stretching excessively, because stretched fabric can provide less coverage.

Swimwear can reduce sun exposure but does not prevent overheating. Choose breathable, quick-drying fabric and avoid excessively tight layers that trap heat. Wet clothing may also become more transparent or less protective, so follow the manufacturer’s guidance and replace worn, thin, or damaged garments.

Combining Clothing With Other Sun-Safety Measures

Apply a broad-spectrum, water-resistant sunscreen with SPF 30 or higher to exposed skin, including your face, ears, neck, hands, feet, and any gaps around the swimsuit. Apply it about 15 minutes before going outside and reapply at least every two hours, or sooner after swimming, sweating, or towel drying.

Wear a wide-brimmed hat and UV-blocking sunglasses when practical. Seek shade, particularly between late morning and mid-afternoon, and use an umbrella or canopy near the water. Water and sand can reflect UV radiation, so covered clothing does not eliminate the need for these measures.

To manage heat, drink water regularly, take breaks in shade or indoors, and avoid heavy outer layers in hot, humid conditions. Watch for headache, dizziness, nausea, unusual weakness, or confusion, and leave the heat promptly if these symptoms appear.

Care Practices That Preserve Protection

Follow the garment’s care label. Rinse swimwear with clean, cool water after each use to remove chlorine, salt, sunscreen, and sand. Wash it gently with mild detergent, and avoid bleach, fabric softener, harsh stain removers, and high-heat washing or drying unless the manufacturer permits them.

Do not wring or twist the fabric. Press out excess water with a towel, reshape the garment, and dry it in a shaded, ventilated place. Prolonged direct sunlight, hot dryers, and rough surfaces can weaken fibers and elastic.

Inspect the suit regularly for thinning, stretched areas, fading, loose seams, or holes. Treat those changes as signs to replace it, especially when the manufacturer does not state that the original UPF rating remains effective after wear. Never assume a faded or damaged swimsuit provides its original level of UV protection.