Eco-friendly trunks - because dolphins are watching!
Lane Line Threads
Recycled Swim Trunks Shark Zombie
Recycled Swim Trunks Shark Zombie
Trunks softer than your coach’s whistle
Product Details
Product Details
No more chafing or sweating. Just you and the water.
- Fabric composition: 91% recycled polyester, 9% spandex
- Lining composition: 92% polyester, 8% spandex (in the US), and 90% polyester, 10% elastane (in the EU)
- Four-way stretch water-repellent microfiber fabric
- Anti-chafe mesh inner liner
- Elastic waistband with drawcord
- Mesh pockets
- Small inside pocket for valuables
- UPF 50+ protection
- The fabric is OEKO-TEX 100 standard certified
- The recycled content of this product is certified under GRS (Global Recycled Standard)
Care:
To make your trunks last longer, wash them thoroughly after each use, that way removing any salt/chlorine residue.
We recommend washing the swim trunks with similar color clothing and not wringing the garment.
Shipping & Returns
Shipping & Returns
🚚 Shipping
We ship every order with care, using the most eco-friendly materials available in each region. Read our full shipping policy.
- Shipping: Free U.S. shipping on all orders. We use USPS First Class or Priority Mail depending on weight. Orders typically processed and ship within 3 - 7 business days.
- Delivery Time: Most packages arrive within 3- 7 business days after we send them for shipping. You’ll get tracking info as soon as your order leaves our hands.
♻️ Returns & Exchanges
We accept returns within 60 days of delivery - Read our full return and refund policy.
You cover return shipping unless the item was damaged or incorrect.
Refunds are processed within 10 business days of receiving your return.
Because we’re committed to reducing waste, we don't cover shipping costs.
Every extra shipment means more packaging, more emissions, and more impact - and that’s not our style.
Need help choosing the right size or style? Just reach out before you order - we’re happy to help you find your perfect fit before you dive in.
♻️ Exchanges
The quickest way to get the item you want is to return the one you have. Once your return is accepted, you can place a new order for the replacement item.
We appreciate you sharing our values and helping us make a difference.
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- From plastic bottles to your wardrobe
- 60‑Day Money Back Guarantee
- Free USA shipping on all orders
Trunks softer than your coach’s whistle
Four-way stretch water-repellent microfiber fabric
No rash or sweating in sensitive spots.
Designed for performance and long summer days, these trunks are made from 91% recycled polyester with a touch of spandex for a flexible, four-way stretch fit. The quick-drying, breathable fabric keeps you comfortable on land or in the water, while the silky anti-chafe inner liner ensures irritation-free wear.
OEKO-TEX 100 standard and GRS (Global Recycled Standard) certified fabric.
Comfort for swimmers, karma for oceans
Mesh pockets + Small inside pocket for valuables
Built with swimmers in mind, each pair features multiple mesh pockets, including a hidden inside pocket for valuables, plus an elastic waistband with an adjustable drawcord for a secure fit.
Swim trunks that won’t ghost your skin
UPF 50+ protection
With UPF 50+ protection, these trunks shield you from harmful rays while you're out in the sun.
Whether you’re coaching on deck, cheering poolside, or diving into the waves, our swim trunks combine eco-friendly materials, functional design, and sustainable comfort so you can enjoy every splash with confidence.
Get yours now and make every swim day stylish, sustainable, and chafe-free.
Soft on skin, strong in water
What is recycled polyester?
Recycled polyester (aka rPET) is basically magic in fabric form. It’s made by giving new life to materials like plastic bottles and packaging, turning them into soft, durable fibers.
And the best part?
It performs just like regular polyester—quick-drying, comfy, and ready for action—while being a smarter, more sustainable choice for your swim gear.
Wear your passion, protect your planet
How’s recycled polyester made?
Recycled polyester starts its journey as old plastic bottles and packaging. First, they’re crushed into tiny chips, then spun into yarn, turned into soft fibers, and finally woven into the fabric that makes up your favorite swim gear.
Made for laps, laughs, and saving the ocean
What are the advantages of recycled polyester?
Making rPET is way easier on the planet—it uses 33–53% less energy and gives off about 55% fewer CO₂ emissions compared to new polyester.
Plus, by turning old plastics into gear like our Swim Trunks, we help keep waste out of landfills and out of the water we love to swim in.
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Why Recycled Polyester Costs More And Why It’s Worth It.
We knew you’d ask.
At Lane Line Threads, we believe in transparency, and we want to share the "why" behind our prices.
From plastic bottles to beach vibes—because the ocean doesn’t need more junk
The Hunt for Plastic Waste
First, we have to collect the plastic.
This isn't your average recycling bin pickup; it often involves dedicated efforts to gather plastic from oceans, coastlines, and landfills.
This crucial first step helps clean up our planet, but it also has a price tag.
the only time trash makes you look this good
A High-Tech Transformation
Those plastic bottles don't magically become thread.
They go through a multi-stage process of sorting, cleaning, chipping, and melting.
This advanced technology is designed to turn waste into a high-quality, wearable fabric, and it's far more specialized and costly than traditional textile manufacturing.
Your drop in the bucket
Small Batches, Big Impact
Unlike fast fashion giants that produce millions of identical items, we operate on a smaller scale.
This allows us to ensure quality and ethical production, but it also means we don't benefit from the massive economies of scale that drive down prices in the conventional clothing industry.
Swim Trunks Frequently Asked Questions
Find answers to common questions about our recycled swim trunks
Know Your Waist Size
Measure your waist at the narrowest point (above your hips, below your ribs).
Check the brand’s sizing chart.
Tip: If you’re between sizes, size up for comfort, especially if the trunks have no stretch.
Consider the Rise.
Rise = distance from the crotch seam to the waistband.
Low-rise: sits below the hips (trendy, less coverage).
Mid-rise: sits at the natural waist (classic, comfortable).
High-rise: sits above the waist (rare in men’s trunks).
Check the Length
Shorts-style (5–7” inseam): classic mid-thigh length, good for swimming and casual wear.
Boardshorts (9–11” inseam): longer, sit at the knee, better for surfing or active movement.
Briefs / Trunks (2–4” inseam): minimal coverage, fast-drying, great for lap swimming.
Liner & Support
Mesh liner: provides support and prevents chafing.
Compression brief: adds snug support for lap swimming or sports.
No liner: sometimes used in fashion-focused trunks; may feel freer but less supportive.
Adjustable Waist
Drawstrings: allow fine-tuning and are good for active use.
Elastic waistbands: convenient, may not be as secure for vigorous swimming.
Check Brand-Specific Sizing
Always consult the brand’s sizing chart because measurements vary.
Some brands give waist and hip measurements, which are more accurate than “S/M/L.”
💡 Quick Tip: For eco-friendly trunks like Lane Line Threads Swim Trunks, sizing tends to run true to standard men’s sizes but double-check waist measurements if you plan to swim vigorously.
Average Lifespan
Everyday swim trunks: 1–3 years with regular swimming in pools or the ocean.
High-quality or eco-friendly trunks like Lane Line Threads: 3–5 years if well cared for.
Factors That Affect Longevity
Chlorine Exposure
Chlorine weakens fabric fibers over time.
Rinse trunks immediately after swimming in a pool.
Saltwater & Sand
Salt can dry out fibers; sand can cause pilling.
Rinse trunks in fresh water after ocean swimming.
Sun & Heat
UV rays and high heat can fade colors and weaken elasticity.
Avoid leaving wet trunks in direct sunlight for hours.
Fabric Type
Polyester or recycled polyester: durable, holds color and shape longer.
Nylon: soft and lightweight but less resistant to chlorine and UV.
Spandex/Elastane content: gives stretch but degrades faster, especially in hot pools or frequent swimming.
Care & Washing
Hand-wash or machine wash on cold; avoid bleach and harsh detergents.
Don’t tumble dry; air-dry flat or hang to prevent stretching.
Signs It’s Time to Replace Swim Trunks
- Elastic waist or drawstring has lost tension.
- Lining or fabric is thinning, tearing, or pilling.
- Color fading or bleaching, especially in UV areas.
- Fit has become loose or uncomfortable in water.
💡 Pro Tip: Rotating two or three pairs of swim trunks extends their life. That way, each pair dries and recovers fully between uses.
Our swim trunks come with a built-in mesh liner for comfort and support - no extra layer needed.
Want more support? Slip on swim briefs, jammers, or compression shorts.
Your call, your comfort.
Picking the right fit comes down to your body and what feels good in the water.
Athletic build: Go for snug trunks that show off your hard work.
Slim build: Mid-length trunks add a little extra presence and balance.
Stocky build: Skip the super tight stuff - relaxed trunks keep you comfy and confident.
