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Swim Diaper

4.1 out of 5 stars 1,134 customer reviews
| 24 answered questions

Price: $4.99 - $559.00
Sale: Lower price available on select options
Blue
Select Size Chart Fit: As expected (66%)
66% of customers say this fits as expected.
Too small
32
Somewhat small
48
Fits as expected
195
Somewhat large
19
Too large
1
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my little one had a BIG accident in a community pool and it held everything together and I was VERY IMPRESSED!
They work great, and are so much more environmentally friendly and easy on the wallet than disposables.
Fits true to size, my toddler owns 3 of the 3T Finis.
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  • No disposable diaper needed
  • Elastic around the waist and legs to contain solid waste
  • Multiple sizes make for a happy baby and confident parent
  • Gentle woven polyester lining for baby's skin
  • 100% Polyester uses no PVC or harmful materials
$4.99 - $559.00

Product Description

5.20.014.433.10 Size: 4T Features: -Boys swim diaper.-Octopus style.-100pct polyester and chlorine resistant.-Washable and re-usable swim diapers.-Small (3-6 months, 9-15 lbs).-Medium (6-12 months, 15-22 lbs).-Large (12-18 months, 22-28 lbs).-XLarge (18-24 months, 28-33 lbs).-XXLarge (24-30 months, 33-38 lbs).-3T (36 months, 34-41 lbs).-4T (48 months, 38-45 lbs).

Product Details

  • Item Weight: 12 ounces
  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B0191U9XXY
  • Average Customer Review: 4.1 out of 5 stars  See all reviews (1,134 customer reviews)
  • Amazon Best Sellers Rank: #212 in Sports & Outdoors (See Top 100 in Sports & Outdoors)

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Size: 3T (3 yrs / 34-41 lbs)Color: Pink Bubble Verified Purchase
small: 3-6 months 9-15 lbs
medium: 6-12 months 15-22 pounds
large: 12-18 months 22-28 pounds
x-large: 18-24 months 28-33 pounds
xx-large: 24-30 months 33-38 pounds
3T: 36 months 34-41 pounds
4T: 48 months 38-45 pounds

I bought the 3T on others recommendations to buy a size up. Daughter is 30 months/30 pounds and it seems a bit big (it EASILY fits over a regular diaper), at least she can grow into it!
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Size: L (12-18 mos / 22-28 lbs)Color: Blue Octopus Verified Purchase
I did order 1 weight category more than my sons current weight because he was right on the edge the diaper fit him great when we got it. as many ppl have already said it is not meant to be absorbent nor is it supposed to hold poo in for long periods while in the water. I put the diaper on my son at the pool right before we enter the water and then change him back to a regular diaper before leaving the pool. My son has not yet pooed in the diaper and hopefully never will but it wouldn't be a bad idea to have a second diaper so you can immediately change the diaper after you have a poop one because like it or not the water will start to break the poop down and it will eventually leak.(that will happen with any swim diaper cloth or disposable). I gave this diaper a 4out of 5 instead of a 5 beacuse it would be nice to have detachable side for easier changes. but the price, fit, and functionality are all great.
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Size: 4T (4 yrs / 38-46 lbs)Color: Royal Verified Purchase
My son is 2 years old, 36 inches tall and 31lbs. I purchased a diaper from iPlay and it was extremely tight around his legs. So, I was hoping by purchasing a different style or brand, one would fit. Finis worked perfectly. I purchased it in a 4T because the iPlay was a 3T and I was worried it would be too small. The fit is perfect and the diaper is well made. I believe it will last all summer and I plan on purchasing another one today.
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Size: S (3-6 mos / 14-17 lbs)Color: Pink Verified Purchase
When we went for a swimming class at a local kids swimming place they had us buy a swim diaper because our state legally requires babies to wear swim diapers in pools. Well, that's fine. So, over the phone they told me they had swim diapers small enough for my daughter who is 3.5 months old.

Actually, the swim diaper that they sold me was a Finis girls swim diaper in medium, which is meant for 6-12 months. It was much too large, so, I figured I would come online and buy a smaller one. So, that's why we bought this Finis swim diaper in the small size.

I tried it on her and the waist size seems about right, but the leg holes are still way too big. I think we're just going to go ahead and use it anyway, because there are not a lot of options for her tiny size, and hopefully she will just grow into it. The leg holes are supposed to be snug, though, so the fit isn't right for her.

If your baby has chubby legs, it may be the right size for you, though. Our baby is kind of a string bean--she's skinny and very tall.

Apart from our sizing problem, this diaper seems to be quite good. It looks well made, I guess that's what I mean.

The packaging says it is machine-washable, but the actual diaper says to hand wash it. I did machine wash it and nothing bad happened.

For the small swim diaper, the leg hole is 9 inches around (without stretching the elastic) and the waist is 12 inches around (without stretching the elastic). So you would probably want your baby's thighs and waist to be a little bigger around than that, in case you want to measure and see if it will fit. The medium actually seems to have about the same diameters, but there is more fabric. So, the crotch is 2.75 inches across for the small and 3.
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1 Comment 62 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Size: 3T (3 yrs / 34-41 lbs)Color: Royal Verified Purchase
The diaper's color and look is true to the picture. But it does run a bit small. My son is 33 lbs. and wearing size 5 diapers. He also currently wears 3T for all clothing and these diapers fit a bit too snug for my liking. We only needed it for a one week vacation so I didn't bother returning it but keep in mind it can run small before purchasing.
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Size: XXL (24-30 mos / 33-38 lbs)Color: Royal Verified Purchase
Our son is 33lbs in size 3T-4T pull-up training pants. The XXL (in Royal Blue) fits great, an inch higher waisted than his Banz brand swim diaper, but still a great suit! The color hasn't faded, and he's in the YMCA pool everyday for swim lessons. He doesn't like swim trunks, and the iPlay brand rubbed a rash between his thighs. He's had a poop incident, and all the "yucky" was contained. Finis is another family favorite brand!
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Size: L (12-18 mos / 22-28 lbs)Color: Lime Green Verified Purchase
I taught swimming to hundreds of toddlers for about 10 years and these are the only swim diaper worth buying. Seriously. The disposables are ridiculous, they get so heavy and full, even the "swimmer's." Plus, these are better for the environment.

For my 22 pound daughter the large size fit great. Her legs are pretty slender, definitely not chunky (so if you have a chunky-legged kiddo you might want to size up). I was worried about it being too big but they are nice and snug around the legs.

Love the neon green. They fit nicely underneath my daughter's suit, though I could also just put her in these without a suit on top.
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Size: XXL (24-30 mos / 33-38 lbs)Color: Royal Verified Purchase
I feel like these fit slightly small. However, they are slim and not noticable when worn under a swimsuit. Luckily, we had no poop accidents, because they are a little tough to take off when they are wet. I fear it would have made a mess. These are still 10 times better than disposable ones and they lasted all season
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