Close-up front view of boys navy jammer swim shorts with lava print side panel on a light grey background.
Black swim jammer with colorful side panel on a light gray background, featuring text about chlorine resistance and sun safety.
Boy wearing black jammer swim shorts with colourful lava print side panel standing poolside at a swimming pool.
Folded Boys Black Lava chlorine resistant training jammer with colourful side panel
Comparison of ordinary swimwear and Lesimo swimwear with text explaining shape retention.

Boys Chlorine Resistant Training Jammer | Lava

DuraFlex Performance Fabric

$38.00 $29.00 SAVE 24%

Size: 6Size Guide

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Buy Any 3, Get an Extra 10% Off

Mix and match storewide. Applied automatically at checkout.

12-Month Quality Guarantee: If your swimsuit loses shape or colour within 12 months, we’ll replace it.

Description

Designed for weekly swim lessons, squad training and school swimming, the Lava jammer gives young swimmers a comfortable, streamlined fit made for regular pool use.

DuraFlex Performance Fabric

Made from durable stretch polyester without elastane, DuraFlex Performance Fabric provides comfortable flexibility while helping the jammer maintain its shape.

Chlorine Resistant for Frequent Pool Use

Tested for more than 200 hours of pool use to help resist fading, sagging and fabric breakdown caused by repeated chlorine exposure.

Soft, Flexible Comfort

The smooth, flexible fabric moves comfortably with the body during kicking, diving, laps and regular training sessions.

UPF 50+ Fabric

Provides added sun protection across the areas covered during outdoor lessons, school swimming carnivals and sunny pool sessions.

Streamlined Knee-Length Fit

The close-fitting knee-length cut reduces loose fabric and drag while providing secure coverage for lessons, laps and squad training.

Free Shipping & Returns

FREE STANDARD SHIPPING

Free standard shipping Australia-wide on orders over $50.

Dispatched from our Sydney warehouse via Australia Post.

30-DAY EASY RETURNS

Free returns & exchanges within 30 days. Sale items are eligible for exchange or store credit.

See our full Returns & Exchanges Policy for details.

Fabric Care

Easy-care chlorine-resistant swimwear.

Rinse in cool fresh water after each swim. Cold gentle machine wash separately using a mild detergent. Wash before first wear. Line dry in the shade. Do not tumble dry or leave rolled up wet for extended periods.

How to Help Kids’ Swimwear Last Longer →

Helpful reads

Questions parents often ask

Why do swim coaches recommend jammers?

Jammers are designed for swim training. They stay secure, reduce drag in the water and allow boys to move freely during lessons, laps and squad sessions.

Learn more →

What’s the difference between training swimwear and regular swimwear?

Regular swimwear is usually made for occasional beach or holiday use. Training swimwear is designed for frequent pool lessons, using chlorine-resistant fabric that helps maintain shape, comfort and coverage over time.

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Why is quick-dry swimwear helpful for families?

Quick-dry swimwear makes busy school and swim routines easier. It dries faster overnight, feels lighter after lessons and is more comfortable for regular weekly use.

Learn more →