Best Swimwear Sets for Boys of 2025

"I bought this for my grandson, and he absolutely loves it. The sets with the shirt are fantastic because kids don’t want to pause their playtime for sunscreen! I returned the first one due to size, but the next size down fits perfectly. Well-made and lovely color!"

"I really like this brand of bathing suit. I got it for my son, and I appreciate that the waist on the shorts isn’t overly snug like with some other brands. It's snug but not uncomfortable."

"Living in Florida, sun protection is essential for us. We mix and match our swim pieces, but my son always reaches for these. They’ve held up beautifully through saltwater, chlorine, and numerous washes!"

"I was thrilled with the great colors and quality of this swim outfit. It's not too hot for summer days and fits true to size!"

"I bought this for my son, who is 52 inches tall. It looks a bit bigger, but the waist is perfect for his husky build, and the art is adorable!"

"My kiddo loves this swim set! It goes on and off easily, even when wet, and the graphics are fantastic. We're both really happy with it."

"I bought this for my grandson and then got another one in-store. Slyfairy is 200% better—the colors are more vibrant and the material feels much better; it's softer and not flimsy at all. Great buy for the money and true to size!"

"My son is almost 5 years old but 4 ft tall and skinny, so the shorts were a bit big for him, but the shirt fits perfectly. Overall, a great quality set that my son loves!"

"I think this suit looks a bit like pajamas and the material feels somewhat cheap, but it's my son's favorite suit! He really loves it!"

"I had to leave a review because this is the first swimsuit that actually fits true to size for my son. He has a skinny waist, so I usually have to order size 4 or 5 in swim trunks, but this time I ordered a size 6 and it fit perfectly! The trunks and shirt fit well without slipping. I appreciate the great material and bright colors that make it easy to spot him at the pool. I'm definitely buying Under Armour swimsuits from now on!"

"I bought this set for my son's shark-themed pool party. It was comfortable and fit great, plus he can wear the shirt for other activities on dry land!"

"I love these Under Armour swimsuit sets for my boys. They are super cute and good quality. The bright colors make it easy to spot them in the water. I order a new one every year as they grow. My only issue is that the top looked green in the pictures, but in person, it's clearly yellow. I wish it was more true to color, but it's still worth the money!"

"Initially, I was unsure about buying this swimsuit for my son, but I'm so glad I did! The quality is excellent, and it's true to size with a lovely pattern and color."

"My son looks great in this swimsuit and had no complaints at all. He loves it!"

"I picked this swimsuit because my son adores orange and blue. It has held up beautifully through many washes! Just a heads-up, it tends to run large, so if you usually size up, you might want to skip that this time!"

"I bought this swimsuit for my son, and he absolutely loved the style and fun colors. The fit and material were perfect!"

"My boys really enjoy these swim sets. They are comfortable, true to size, and they dry quickly. It's a great value for the money!"

"This swim set is perfect for my grandson. The colors are bright, and the material is of top quality. I would definitely recommend it!"

"I found the swimwear I bought for my grandson to be very cute. I chose a 4T since he just turned 5, and 5T is still a bit big for him. He enjoys wearing trunks and a shirt for sun protection, and it was a nice touch that they were a matching set that also coordinated with his swim shoes."

"I really appreciate the great quality of this swimwear. My son loves it, although the shirt is a little bigger than expected. I know he will grow into it eventually!"

"I was disappointed when, after just one wash, the shark graphic started peeling off. For $20, I anticipated it would last at least a summer, not just a single use. My child was very excited about it, so it was upsetting to see it deteriorate."

"I think this is so cute and it fits perfectly. It offers great sun protection and comes in nice, versatile colors. Definitely a good value for the money."

"I got this for my almost 2-year-old nephew. I really liked the design and color, especially the text and paintings on it. The quality is good; after washing it once, the color and fitting haven't changed. I recommend hand washing or using a laundry bag to keep it safe. Five stars from me!"

"This bathing suit is pretty much true to size, but I suggest ordering up if your child is larger. I was pleasantly surprised by the quality, and it has held up well through multiple washes and pool days. The built-in underwear and drawstring are great features. I'm very happy with this toddler bathing suit and would definitely consider this brand for future purchases."

"I love the quality of this suit! It’s machine washable and doesn’t shrink. My kid finds it very comfortable, and when it gets wet, it looks like he has that little Hulk body!"

"My son adores Spider-Man! This suit is perfect for him. He usually wears 3T shirts and 2T shorts, so I got this in a 2T. The shirt fits well, but the bottoms are a bit large."

"This is an awesome suit for any superhero-loving kid! The bright red color ensures visibility in the water, and it’s super comfy for my two-year-old. Easy to put on and take off!"

"I absolutely love this swimsuit's colorful design! It makes it easy to spot my kid in the water, and it has held up wonderfully all summer with all the swimming we've done."

"I ordered a size 12 for my grandson, and it fits him perfectly! He spent a full day at the waterpark in the Texas heat, and he mentioned that the long sleeves didn’t bother him at all. The colors are beautiful, but I did notice some irritation on the insides of his thighs by the end of the day from the seam. Despite that, he wanted to keep them, so I’m getting him a new pair with a soft lining for extra comfort."

"My grandson was thrilled with his swimsuit! It was exactly his size, and he loved it!"