Best Swim Trunks for Baby Boys of 2025

Gerber Sailboats Swim Trunks come in a pack of two, featuring UPF 50+ fabric to shield your baby boy from harmful rays. The comfort-stretch waistband ensures a snug fit, while the fast-drying material keeps him dry and comfy all day long. The light blue sailboat pattern adds a cute touch to his swimwear. These swim trunks are designed to protect, fit well, dry quickly, and look adorable on your little one.

RUGGEDBUTTS Swim Shorties are designed to protect your little boy's delicate skin from harsh UV rays with built-in UPF 50+. They feature functional drawstrings for all-day comfort and are made of high-quality, fade-resistant and durable fabric that feels soft and comfortable.

The Kanu Surf Baby Trunks are perfect for your little one's beach adventures. Made from 100 percent polyester comfort technology quick dry microfiber, these trunks offer UPF 50 plus rating to protect your baby's delicate skin from the sun's harmful rays. With its quick-dry feature, you don't have to worry about your baby staying wet for too long. The trunks are available in sizes for both men and kids, making it easy to match with the rest of the family. Whether your baby is splashing in the pool or building sandcastles on the shore, these trunks provide the comfort and protection your little one needs for a fun day at the beach.

The Kanu Surf Boys' Baby American Flag Swim Trunk is made of 100% poly comfort technology quick-dry microfiber with UPF 50+ rating, ensuring that your baby boy stays dry and safe from the sun's rays. Additionally, this swim trunk is available in men's sizes, so dad and son can match while at the beach or pool.

The Thilsidee Swim Trunks are perfect for your little one’s summer adventures. Made from high-quality, 100% polyester, these trunks are soft, breathable, and quick-drying, ensuring comfort whether at the beach or pool. The unisex design features an elastic waistband with a drawstring, making it easy to adjust for a secure fit. With fun, colorful prints like turtles and sharks, your child will love showing off their style. These swim trunks are versatile enough for various casual activities, making them a great addition to any summer wardrobe.

The Socutebabe Swim Trunks are designed for comfort and style, perfect for your little one. Made from soft polyester, these swim shorts ensure a gentle feel against the skin. The elastic waistband with a drawstring allows for a secure fit, accommodating active toddlers. Featuring fun prints like ocean animals and geometric designs, these trunks add a playful touch to summer outings. They are versatile for various activities, from swimming and surfing to lounging at the beach. Be sure to check the size chart to find the perfect fit for your child.

Introducing the Sisterly Market Swim Shorts - Stripes, the perfect swim trunks for your little one. These swim shorts come in various sizes to accommodate babies and toddlers of different ages. With a stretchy liner, elastic waistband, and drawstring, these shorts ensure the perfect fit for your child. The size 1 option is recommended for babies aged 6-18 months, while the size 2T is ideal for 18 months to 2 years. The rest of the sizes run true-to-size. The drawstring tie allows for easy sizing up if needed. Made with high-quality materials, the shorts are durable and comfortable. The outside fabric is 100% polyester/microfiber, while the lining is made of 86% nylon and 14% spandex. These swim shorts are machine washable, making them convenient for busy parents. Get your little one ready for a day at the beach or pool with the Sisterly Market Swim Shorts - Stripes.

These baby swim trunks are made of high-quality polyester that is both durable and comfortable. Available in sizes ranging from 0-6 Months to 2-3T, they come in a variety of unique prints, including sharks, foxes, and pineapples. These trunks are perfect for a variety of activities, from swimming and surfing to lounging at home. They are also machine washable for easy care and come with a free size exchange service for Prime members.

The RUGGEDBUTTS Swim Trunks are designed for your little boy’s comfort and safety. With UPF 50+ sun protection, these trunks shield his skin from 98% of harmful UV rays while he enjoys the outdoors. The water-repellent fabric ensures he stays dry and comfortable, even after splashing around. An elastic waistband provides a snug fit, making it easy for him to move freely. Plus, the inner mesh lining adds an extra layer of comfort. These features combined create a perfect swimwear choice for fun in the sun.

The RUGGEDBUTTS Swim Trunks are designed to keep your little one safe and comfortable during sunny days. With UPF 50+ sun protection, these trunks block out 98% of harmful UV rays, ensuring your baby’s delicate skin is shielded from the sun. The water-repellent fabric allows for quick drying, making them perfect for beach or pool outings. An elastic waistband and inner mesh lining provide a snug and comfortable fit, allowing for easy movement. Plus, the functional ties add an extra layer of security, so you can focus on fun in the sun without worry.