Two pack of Lenzing Tencel™ Lyocell Boys Trunks

Boys Trunks - 2 Pack

$29.95
Size
Description

Everyday comfort meets eco and skin-friendly innovation

NB: For everyday wear, we recommend sizing up for a comfort fit. For eg, if you usually wear size 11/12, try 13/14.

Our boys’ trunks are crafted from ultra-soft Lenzing™ TENCEL™ Lyocell, a premium fibre made from sustainably sourced wood in a closed-loop process with no toxins. Naturally breathable and moisture-wicking, these trunks keep skin cool and dry - whether it’s school, sport, or weekend adventures.

The smooth, irritation-free fabric is gentle on sensitive skin, and there is no exposed elastic like other brands. 

  • Made from Lenzing™ Lyocell with no polyester or nylon – soft, breathable, and sustainable

  • Moisture-wicking & cooling – perfect for active kids

  • Gentle on skin – hypoallergenic and irritation-free and no elastic against skin

  • Odour-resistant – naturally antibacterial

  • Durable with stretch – holds shape wash after wash

  • Open fly for extra breathability

Better for our boys, better for the planet.

Why we didn't use cotton?

All our products underwent the kids and teens test and Lenzing™  Lyocell fabric came out on top for trunks as they have more moisture wicking properties and a soft feel. Cotton absorbs moisture and can get uncomfortable in humid environments when worn as trunks. This fabric is the only fabric that we put on the same eco and health level as organic cotton. 

We also never use bamboo as it's processed with a large amount of chemicals and is of poorer quality to Lenzing fabrics.

For organic cotton loyalists, we have the briefs available here. 

Most importantly, our trunks (and all products) are Oeko-Tex 100 certified meaning they're free from harmful chemicals. 

Please email us if you're keen to see organic cotton trunks here in future at info@billiegreen.com.au.

Sizing note: Please choose carefully as we cannot accept returns on briefs and trunks. 

 
Fabric
  • 92% Tencel™ Lyocell/ 8% Elastane
Shipping & delivery

Domestic orders

Orders placed before 12 pm are dispatched the same business day from our NSW South Coast studio. Orders placed after 12 pm, on weekends or public holidays will be dispatched the next business day.

Standard shipping is a reduced flat rate of $7.95, regardless of order size, and is free for Australian orders over $130. Orders are sent via Australia Post and generally arrive within 2–7 business days, depending on your location.

Express shipping is available for $11.95 per order.

International orders

International shipping is a flat rate of AUD $20 and is free for orders over AUD $130. Orders are sent via Australia Post Standard International and generally arrive within 5–15 business days. Any duties, taxes or import charges are the recipient’s responsibility, however we do have a Zonos account allowing us to pre-pay taxes to the US and some European countries.

Plastic-free packaging

Every order is shipped in 100% plastic-free, FSC-certified paper-based packaging. Even our packing sticky tape and express-post tape is biodegradable.
Breathable
Lightweight
Minimal seams
View details
✔ BILLIE GREEN
  • ✔Nature-based, ultra-soft certified fabrics
  • ✔Lightweight, breathable, and anti-bacterial
  • ✔Minimal synthetics, gentle on people & planet
  • ✔OEKO-TEX® 100 certified – no harmful chemicals
  • ✔Designed to grow with you and last longer
  • ✔Air out and wear again—only needs weekly washing
  • ✔Naturally kind to sensitive skin
VS
❌ OTHER BRANDS
  • ×Made with fossil-fuel-based plastics
  • ×Traps sweat, heat and odour
  • ×Releases harmful microplastics into the human body and the environment
  • ×Often contains harmful chemicals such as PFAS and BPAs
  • ×Skimpy, fast-fashion designs that teens grow out of quickly
  • ×Needs washing after every wear due to odour
  • ×Can irritate sensitive skin
  • 5 stars: 4 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
S
Samantha

We just got a couple of pairs to try. My 7 year and 10 year old, who have always worn bonds. LOVE THEM. They just want to wear them all the time, instead of Pajamas. They seem to be keeping them warm in the cool weather.
I found this brand as searching for something low tox after reading about PFAs and other chemicals affecting men/womens fertility. They are move expensive but look like they will last. I have just placed another order. So happy with our purchase.

A
Anonymous

Very comfortable underwear. We will definitely be buying more.

A
Anonymous

so soft and fit really well, don't move around. and no tags which is fantastic.

A
Anonymous

Really soft and cooling fabric and I like that they don't have the polyester elastic against the skin like other brands. My boys love them. We sized up and they don't ride up.

FAQ

Are these true to size?

Our Boys Briefs are a generous fit and we recommend sizing down if you are in between sizes.
Our Boys Trunks are usually preferred to be worn looser - so we recommend sizing up in these if you are between sizes.
Our Boys Skins are typically worn true to size.

As Featured In
157
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  • 5 stars: 4 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
S
Samantha

We just got a couple of pairs to try. My 7 year and 10 year old, who have always worn bonds. LOVE THEM. They just want to wear them all the time, instead of Pajamas. They seem to be keeping them warm in the cool weather.
I found this brand as searching for something low tox after reading about PFAs and other chemicals affecting men/womens fertility. They are move expensive but look like they will last. I have just placed another order. So happy with our purchase.

A
Anonymous

Very comfortable underwear. We will definitely be buying more.

A
Anonymous

so soft and fit really well, don't move around. and no tags which is fantastic.

A
Anonymous

Really soft and cooling fabric and I like that they don't have the polyester elastic against the skin like other brands. My boys love them. We sized up and they don't ride up.