Size chart

FREE AUSSIE BIRDS 3-PACK
VALUED AT$53.85
Add $100 more to unlock your free gift
Spend $100 or more and we'll add the 3-pack to your order for free. While stocks last.
The Australian Geographic Society is dedicated to supporting scientific research, conservation, and a spirit of adventure. Through sponsorships, public fundraising, and grants, they champion projects that protect Australia’s unique natural heritage and inspire a deeper connection with the environment.
By purchasing the Great White Shark Men’s Trunk, 10% of proceeds will be donated to the Australian Geographic Society.
Material: 95% Cotton, 5% Elastane
More About the Australian Geographic Society:
Established in 1987 by Dick Smith, the Society has contributed millions to environmental and scientific initiatives across the country. Their mission is to empower individuals and organisations tackling Australia’s environmental challenges through storytelling, support, and recognition.
With your support, we can help fund critical conservation, research, and education programs that protect our landscapes, wildlife, and future generations of Australian adventurers.
Orders are typically processed and shipped within 1–3 business days.
FREE standard shipping on orders over $70 across Australia, New Zealand and the USA.
Australia
Standard delivery: 2–7 business days after dispatch
New Zealand
Standard delivery: 5–10 business days after dispatch
USA
Standard delivery: 7–14 business days after dispatch
Returns
For hygiene reasons, underwear can't be returned. Please check our size guide before ordering.
Our underwear is made from 95% cotton and 5% elastane.
We recommend washing in cold water with like colours.

At Sydney Sock Project, every pair does more than just cover your bits. It helps protect Australia's natural heritage.
We're proud to support the Australian Geographic Society in their mission to fund vital research, conservation, and exploration across the country.
Why Choose Sydney Sock Project?
Real Impact: Every purchase from our Australian Geographic collection helps fund initiatives dedicated to preserving Australia’s environment, wildlife, and spirit of adventure.
Premium Quality: Our trunks are crafted with meticulous attention to detail, using high-quality materials to ensure comfort and durability.
Customer Community: Join a community of 250,000+ happy customers who have chosen Sydney Sock Project. Experience the satisfaction of being part of a movement that blends fashion with purpose.
See above our size guide.
For hygiene reasons, underwear can't be returned. Please check our size guide before ordering to find the right fit.
AUS/NZ
Standard Shipping: 2-7 days
Express Shipping: 1-2 days
Rest of World
Standard Shipping: 7-14 days
Express Shipping: 3-5 days