Baby Boys' Swimwear Sunsuits

Choose based on your child's weight and height using the brand's size chart; if between sizes, size up for layering or longer wear and size down for a snug fit under 6 months. Consider adjustable features like snaps or elastic waists and check sleeve/leg lengths for full coverage

Look for garments with an Ultraviolet Protection Factor (UPF) rating of 30 or higher—UPF 50+ offers very good protection—and long sleeves, high necklines, and extended leg coverage to reduce exposed skin. Remember sunsuits supplement but do not replace sunscreen on uncovered areas and hats for the face

Choose quick-drying, stretchy synthetic blends such as nylon/spandex or polyester/spandex for mobility and chlorine resistance; flat seams and tagless labels increase comfort. For newborns, look for soft linings and secure closures like snaps or two-way zippers for easy diaper changes

Rinse suits in cold water after each use to remove salt, chlorine, and sunscreen; wash on a gentle cycle with mild detergent and air-dry away from direct sunlight to preserve elasticity and UPF. Avoid bleach, fabric softeners, and high-heat drying which can degrade fabric and protective treatments

Look for crotch snaps, two-way zippers, or full-length front zippers that allow quick access without fully undressing the baby. Elasticized leg openings and roomy fits around the diaper area also simplify changes

Lower-priced options may use lighter-weight fabrics and simpler construction, while higher-priced pieces often use higher UPF-rated fabrics, stronger elastane blends for longer-lasting stretch, and reinforced seams. Check user ratings for longevity and colorfastness if durability is a priority