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4 instalments of $5.24 with Klarna Learn more
- Built with LYCRA XTRA LIFE fiber engineered to have 5-10 times more durability than ordinary spandex fabrics
- Provides resistance to suntan lotions, skin oils and chlorine better than conventional fabrics
- Block the Burn with UPF 50+ protective fabric
- Resists sagging, bagging and fading
- 80% Nylon/20% LYCRA XTRA LIFE fiber
Tracked Standard Shipping
***Limited Time Only: Free Tracked Standard Shipping on all orders***
• Delivered within 4-8 business days
• $4.95 for orders $25.00 or less
• $7.95 for orders $25.01 to $99.99
• Free for all orders over $100.00
Standard orders will be processed in 1-2 business days, pending credit card approval. A business day is Monday through Friday, except holidays.
Priority Shipping
• Delivered within 2-4 business days
• $16.95 Flat Rate
• Option will be visible at checkout if available to your address
Priority shipping orders will be processed in 1-2 business days, pending credit card approval. A business day is Monday through Friday, except holidays.
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Learn to Swim Jammer
Boy's Training Swim Bottom
MSRP: $29.50
$20.98
Save: $8.52
In stock
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4 instalments of $5.24 with Klarna Learn more
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Average connection time 25 secs
Average connection time 25 secs
- Built with LYCRA XTRA LIFE fiber engineered to have 5-10 times more durability than ordinary spandex fabrics
- Provides resistance to suntan lotions, skin oils and chlorine better than conventional fabrics
- Block the Burn with UPF 50+ protective fabric
- Resists sagging, bagging and fading
- 80% Nylon/20% LYCRA XTRA LIFE fiber
Tracked Standard Shipping
***Limited Time Only: Free Tracked Standard Shipping on all orders***
• Delivered within 4-8 business days
• $4.95 for orders $25.00 or less
• $7.95 for orders $25.01 to $99.99
• Free for all orders over $100.00
Standard orders will be processed in 1-2 business days, pending credit card approval. A business day is Monday through Friday, except holidays.
Priority Shipping
• Delivered within 2-4 business days
• $16.95 Flat Rate
• Option will be visible at checkout if available to your address
Priority shipping orders will be processed in 1-2 business days, pending credit card approval. A business day is Monday through Friday, except holidays.
Further Information
• Delivery Information
• Returns Policy
• Dealer Locator
• Privacy Policy
Frequently Bought Together



Total Price: $41.96
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Customer Reviews
Top Customer Reviews
Where reviews refer to clothing or accessories, results may vary from person to person. Customer reviews are independent and do not represent the views of Speedo.
AWFUL quality for a SPEEDO Jammer
the material started showing signs of wear at FIRST wear.... really BAD quality!
Report this reviewgreat comfort for young grandson
My grandson was suffering with chafing from traditional swim trunks. He could only be in the pool 15 min before he would start complaining of discomfort. The Speedo Swim Jammer solved the problem immediately. He can now enjoy our backyard pool all day without complaint.
Report this reviewExcellent quality
I wanted an inexpensive jammer for sons practice for Swim Team. I bought one from Amazon, but quality felt off and stiff. This purchase from Speedo.com is same quality and sizing as Swim Team jammer.
Report this reviewway too small according to size chart given
The jammer is too small for the size chart given by speedo. If you choose to email its customer service, well, never reply. If you decide to make a return, ok, pay $6 shipping fee first. What a great experience. Never buy this brand again.
Report this reviewThe best!
This is the BEST trunk for little boys who have a tough time with rashes between their legs/etc. during swimming. This is our second pair and we will continue to buy them, for sure!
Report this reviewGreat buy for pre swimming team
This is my second purchase. Great buy ,true to size.
Report this reviewNo.
I bough it fir my son. Quality very bad.. very disappointing you get what u pay.
Report this reviewVery disappointed
The speedo logo came off after using the suit once. The string started to unravel and I had to cut it off. I would have returned it but I need it for my sons swim meets. I can't just buy another one because Speedo is the only Company that I found that had a Competitive of swimsuit for my 4 year old T4.
Report this reviewUse asrash guard for 8 year old
My 8 year old is an active boogie boarder / surfer who was always being irritated by all his swimsuits (even with lining cut out). We bought this to use under his suit and it totally works!! No more rash, he loves it!
Report this reviewGood
My son is 6and 1/2 on the slim side. I got him size 7 and it fits well. I hope you got size 8 and 10 in stock soon. Definitely will buy the next size up when he outgrows the current one.
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Speedo Eco Prolt Jammer
MSRP: $44.00$30.98 -