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Boy's Wave Swim Shorts UPF 50+

Kid's Wave Swim Shorts UPF 50+ is rated 4.0 out of 5 by 22.
  • y_2020, m_8, d_14, h_15
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  • UPF 50+
  • Comfortable but snug elastic waistband
  • Knee-length cut
  • Inseam 7" (size small 5-6)
  • Aqua Juno™ fabric: Chlorine and saltwater resistant with 4-way stretch
  • Polyester/Spandex
  • Machine wash warm, line dry
  • Imported

Recommended UPF 50+ sun protection for all kids who are ready to splash in the water!

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

The Kid's Wave Swim Shorts are an easy, pull-on solution to provide extra coverage for days at the beach or pool. These kids swim shorts feature a knee-length cut and an enclosed elastic waist.

Fabric Details
Aqua Juno™ FabricAqua Juno™ Fabric
Aqua Juno fabric is supple, smooth and soft with all the intelligent features of our ground-breaking Aqua Classic 4-way stretch fabric. This breathable, quick-dry UPF 50+ fabric is chlorine and saltwater resistant, making it just right for water play, casual swimming, fishing and boating.

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.


MEASUREMENTS 0-3M 3-6M 6-12M 12-18M 18-24M
HEIGHT (inches) 22-25 25-27 27-30 30-32 32-34
WEIGHT (pounds) 11-15 15-18 18-23 23-27 27-30


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


MEASUREMENTS XS 4 S 5-6 M 7-8 L 10-12 XL 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 22½-23 23½-24½ 25-26 27-29


0 - 6M
6M - 12M
12M - 24M
2T - 3T
S/M (4-8)
L/XL (10-12)
HEAD SIZE (inches) up to 17½ 18-18½ 18½-19½ 19½-20 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 Bicycle shorts - not at all what I expected I ended up returning these. They are bicycle shorts - skin tight with no inner liner.
Date published: 2019-06-10
Rated 3 out of 5 by from Current shorts do not fit at the waist Our last pair of Coolibar shorts lasted a couple of years, but were finally outgrown. I ordered the next size up, and the fit is different. These shorts (ordered in May, 2019) do not come up to the waist! Not even close. We would much prefer shorts/capris/leggings that fit at the waist.
Date published: 2019-06-04
Rated 5 out of 5 by from Great fabric! Confession: I don't own these but I do own a lot of Coolibar clothing and if Coolibar made Berrnuda shorts for women in this fabric/pattern and the other pattern I would absolutely buy them!
Date published: 2018-05-12
Rated 5 out of 5 by from Great, but sizes really vary! Love love love these shorts! My girls wear these under their swim skirts for more leg coverage so i love that they coordinate with the skirts!! Sizing is a little inconsistent though. I agree that the waist could be higher so that they don't have to worry about them showing any crack in the back! ... As you can see by this picture the solid color shorts are 2 inches longer than the SAME SIZE (small) print short. For your sizing purposes, this is a sz med skirt. Great quality! Hard for me to find modest dry fit clothes so these are definitely a GO TO for this family!!
Date published: 2017-07-21
Rated 3 out of 5 by from New fit this year I buy these swim shorts every year. The sizing has changed for 2017. The legs are more fitted which is nice and the fabric seems sturdier. However, the rise is now way too short and I had to constantly tell my daughter to pull up her swim shorts so her bum did not show. I wish Coolibar would get their sizing correct for children!
Date published: 2017-07-04
Rated 3 out of 5 by from nice fabric but way too large! My 7-yr daughter is a typical size 7 and she fits in Coolibar surf shirt in size M (7~8) perfectly. However this swim short is waaaaaay too large! I cannot imagine how this short will fit any 7~8 old girl who maintains a normal/health weight. Have to return it.
Date published: 2016-12-31
Rated 3 out of 5 by from Odd sizing this year :( I've been using these for my girls for years and the sizing has always run big, this year it is very odd and I'm so disappointed! The legs are very tight on my slim girls, the waist band is huge and the rise is much shorter so they look like they're always falling down. Very disappointed Coolibar.
Date published: 2016-06-26
Rated 3 out of 5 by from girls swim shorts I ordered rash guard swim tops and swim shorts for my granddaughters, 6 & 8, to replace ones that I purchased two years ago which held up well, but after many hours of pool use and machine washing they are stretched out. However, I think the sizing needs to be more accurate. If I ordered according to the size chart, they would need a small and a medium. I purchased an XS and Small instead because they ran big on the previous purchase two years ago and had to be exchanged for smaller sizes. Both swim shorts I just ordered run big in the waist. The XS is about 2 inches big in the waist and there is no draw string to tighten. They fall half way down on her. My only option is to exchange for a size 3T with her 20 inch waist, but she is 45 inches tall and weighs 37 pounds. I'm afraid they would be too short and too snug around the legs. The elastic is not even gathered very tight to where it could be stretched to the size of the waist. The old ones have a nice tight gathering that has held up well and those are what she has to wear right now with her new top. While the shorts for my other granddaughter also run big in the waist they do stay up. The products are great for sun protection. The girls love them because they only need sunscreen on their face and lower legs. I have been using Coolibar for myself the last several years due to severe sun allergy and skin cancer. I would not be able to go to the beach without the swim capri and ruche rash guard swim top. My other thoughts are on the patterns. Too much stripes for both women and girls. What happened to the pretty tropical prints. I get many compliments on my azure palm and batik jungle swim tops and the girls floral paradise. I would recommend Coolibar for the great protection, but beware of the sizing at least for girls with a 19 pounds weight spread on medium and 26 pounds on a large. I would give this a five star rating if it weren't for the size issue.
Date published: 2016-06-22
  • y_2020, m_8, d_14, h_15
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.10
  • cp_1, bvpage1
  • co_hasreviews, tv_1, tr_21
  • loc_en_US, sid_03895M, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_coolibar
  • bvseo_sdk, p_sdk, 3.2.1
  • CLOUD, getReviews, 7.02ms