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Kid's Swim Tights UPF 50+

Kid's Swim Tights UPF 50+ is rated 3.8 out of 5 by 19.
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  • NEW!
  • UPF 50+
  • Comfortable but snug elastic waistband
  • Aqua SUNTECT®: Chlorine and saltwater resistant with 4-way stretch
  • Inseam 16 3/4"; (size small 5-6)
  • Easy care: machine wash warm, line dry
  • Imported

Full-length coverage for them, peace of mind for you. Our Swim Tights offer waist-to-ankle UV protection without weight or bulk. They're extra durable, too, designed to be passed down from one child to the next. Best of all, these swim tights offer the sun protection you expect from Coolibar's collection of sun blocking swimwear.

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Fabric Details

aqua SUNTECT® Chlorine and saltwater resistant with 4-way stretch

Recommended for: swimming, stand-up paddleboarding, waterskiing, fishing and boating, leisure watersports in swimming pools, fresh and saltwater

Avoid: active fitness, not moisture-wicking and may cause overheating

With Coolibar, it's easy to find the UV clothing size that fits your child best. Just use the size charts here and order with confidence every time. To determine the correct size, match your child's measurements to the charts (weight is in pounds and all other measurements are in inches). If you have any questions regarding the fit of an item, talk to one of our Customer Service Representatives at 1-800-926-6509. They will be happy to help.


MEASUREMENTS6M6 - 12M12 - 18M18 - 24M
HEIGHT (inches) 25 - 27 27 - 30 30 - 32 32 - 34
WEIGHT (pounds) 15 - 18 18 - 23 23 - 27 27 - 30


HEIGHT (inches) 34 - 36 36 - 38
WEIGHT (pounds) 30 - 33 33 - 36


MeasurementsXS 4S 5-6M 7-8L 10-12XL 14-16
HEIGHT 38-41 42-47 48-53 54-59 60-62
WEIGHT 35-38 39-48 49-68 69-95 96-115
CHEST 22 23-24 26-27 28-30 31-32
WAIST 22 22 1/2 - 23 23 1/2 - 24 1/2 25-26 27-29


0 - 6M
6M - 12M
12M - 24M
2T - 3T
S/M (4 - 8)
L/XL (10 - 12)
HEAD (inches) up to 17 1/2 18 - 18 1/2 18 1/2 - 19 1/2 19 1/2 - 20 20 - 21 21 - 22

Use a soft tape measure. 

Height: Stand in stocking feet, with feet together, back to the wall. Measure from crown of head to the floor. 

Arm: Bend arm to 90 degrees. Place hand on hip. Start at center of back of neck measure across the shoulder to the elbow and down to the wrist. Number on inches equals your sleeve length. 

Bust/Chest: With the arms relaxed down at sides, measure fullest part of bust/chest, keeping tape parallel to floor. 

Hip: Stand with heels together, keeping tape straight and parallel to the floor. Measure around fullest part. 

Neck: Measure around base of the neck (the lowest point of the neck). Number of inches equals the neck size. 

Inseam: Take a pair of pants that fits you well. Measure from the crotch seam to the bottom of the hem. Number of inches equals inseam length. 

Rise: Start the tape at the center back waist, run the tape between your legs, pulling comfortably at the crotch and up your natural waist. Total measurement is your rise. 

Waist: Measure around your waist, against your skin (not over your shirt or pants) at the height you normally wear your pants. 

Head: Measure around your head, from the center of your forehead, keeping tape straight and parallel to the floor. Measure around fullest part.

Rated 1 out of 5 by from Please go back to former design! I ordered a pair of these last year and had to return them. Just like many other reviewers reported, the waist was way too loose on my daughter and when she bent down, they did not do a good job of covering her behind. I realized that they still had the older version on sale so I grabbed a couple of pairs of those and they fit perfectly, the waistband was exactly at her waist and was the right tightness. To customer service: the version I am referring to is the #03826GS. I am back on the Coolibar website looking for these but you no longer sell them. Please, please bring them back and I will be buying them! We love the concept of swim tights - no wasted sunscreen and my kids can go right ahead and play in the water!
Date published: 2017-07-25
Rated 4 out of 5 by from Good fabric, waist too big We have ordered these for the last 3 years and it seems this year the sizing is different. In the past they were much longer and we didn't have an issue with the waist. This year they are shorter and the waist is much larger. I had to sew them to make them fit. We will still continue to order them because a) I can sew and b) because we're grateful that Coolibar is the only company that has nice swim tights. Hope they fix it for next season.
Date published: 2017-06-20
Rated 3 out of 5 by from Waist too large The waist on these sag when wet, it shows a cute little bum-bum, but we really don't want that area exposed to the sun!
Date published: 2017-06-16
Rated 2 out of 5 by from FIT NEEDS IMPROVEMENT I purchased 2 of these same swim tights 2 years ago and they were fantastic. The waist went up higher and waistband was smaller but still able to stretch. The old pants fit very well for my kids skinny frame and full booty. However, when I purchased these pants again in both medium and large, I realized they are cut differently. The pant waistband sits lower to the hip and is huge like falling down but her booty fits fine in that area. (Basically too large on the waist but too small on the butt) I also did notice that they are not as long as the old ones as another reviewer stated. These pants would probably fit better if my kids were heavier in the waist and had flatter butts. I miss the old version which had more versatility in the cut.
Date published: 2017-02-20
Rated 2 out of 5 by from Ill fitting These are big in the waist and short in the leg-had to pay to get them taken in. These need an adjustable waist band!
Date published: 2016-08-23
Rated 3 out of 5 by from Great tights Just picked these up for my near three year old. We've been using the 18-24 mo size from last year and those are fantastic. I bought them a size up (XS instead of 3T) to save them for next year. The tights are great quality, but they are way too big in the waist for her to even roll up. She's average size for her age. So, I'll keep them for next year.
Date published: 2016-08-06
Rated 5 out of 5 by from Sun protection with comfort! I work in dermatology and Coolibar is the gold standard for me. Bought these since we spend a lot of time on a boat. When they are wet, they keep my toddler warm (if it's cool outside) and cool (when it's hot out). I thought she'd find them uncomfortable, but she actually loves them! Plus, it's really nice to have less of a fight with sunscreen! ❤️
Date published: 2016-07-19
Rated 1 out of 5 by from Fabric is terrible and snags I bought these leggings to prevent my daughter from getting sunburned at the lake. She wore them one and the fabric snagged all over the leggings. They look terrible after one wear. The concept is great, but they need to find different fabric to make these leggings out of. I wouldn't recommend these swim tights.
Date published: 2016-07-03
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