Frequently Asked Questions: Debriefs Men's Underwear Australia

Trunks have a shorter inseam that sits mid-thigh, while boxer briefs extend further down the leg for more thigh coverage. Both styles use the same MicroModal fabric and construction.

Choose trunks if you prefer less leg coverage and a lighter feel. Choose boxer briefs if you want extra coverage to prevent thigh chafing, especially during physical activity.

Debriefs are made from 94% MicroModal and 6% Elastane. MicroModal is a premium fabric derived from sustainably managed European beechwood, produced by Lenzing in Austria. It's 3x softer than cotton, naturally breathable, and moisture-wicking. The 6% Elastane provides 4-way stretch for a supportive, body-hugging fit that doesn't lose its shape.

Debriefs underwear is made in Turkey by a GOTS-certified manufacturer that runs on solar power and plants 1,000 trees annually to offset carbon emissions. The MicroModal fabric is sourced from Lenzing in Austria, where it's produced from FSC-certified beechwood using a closed-loop process that recovers 99% of resources.

Debriefs underwear is made from MicroModal, one of the most sustainable fabrics in the textile industry. It’s derived from FSC-certified beechwood trees that don’t require pesticides or irrigation, and produced in a closed-loop system that recovers 99% of chemicals and water.

Our manufacturing partner in Turkey is GOTS-certified, runs on solar power, and plants 1,000 trees annually. We ship using 100% biodegradable mailing satchels. Learn more about our sustainability practices.

The full supply chain: beechwood trees are sustainably harvested in European forests. Lenzing in Austria processes the wood into MicroModal fibre, recovering and reusing 99% of resources. The fabric is sent to our Turkish factory, where it’s sewn into the final product under fair-pay, quality working conditions.

MicroModal is one of the most eco-friendly fabrics in the textile industry. It’s 100% biodegradable, derived from renewable beechwood, and produced using 20x less water than cotton. Our manufacturing partners are GOTS-certified and follow sustainable production practices. We also use 100% biodegradable mailing satchels and carbon-neutral shipping providers. See our full sustainability commitment.

Choose your size based on your regular pants waist measurement. Match your waist to the size chart on the product page. If you're between sizes, we recommend sizing up for a more comfortable fit.

Still unsure? Email us at help@debriefs.com.au and we'll help you find the right size.

Machine wash cold on a delicate cycle and tumble dry on low heat. Do not iron, bleach, dry clean, or use fabric softener. This protects the MicroModal fibres and maintains the garment's softness, stretch, and shape over time.

Follow the washing instructions printed on the inside back panel of your Debriefs for specific guidance.

It's easy! Simply add all the items you want to your cart and a discount will be applied automatically. The more you add, the higher the discount will be.

You can mix any style, colour and size.

Shipping is free for all orders within Australia and New Zealand over $100. Orders under $100 ship for a flat rate of $6.95 within Australia and $9.95 to New Zealand.

For the US, UK and all other international destinations, shipping is free on orders over 150 in your local currency. Orders below the free-shipping threshold ship at a flat rate based on destination.

Express shipping is also available within Australia at checkout.

Orders are processed within 1-2 business from confirmation. Australian orders are shipped via Couriers Please or Australia Post depending on your location.

Estimated delivery time is 1-3 business days for metro areas, and 2-6 business days for rural areas.

All international orders are shipped via Australia Post and are estimated to arrive within 3-10 business days.

Tracking information is provided for all orders upon shipment.

Express shipping is available for all orders at an additional fee.

All orders are shipped from Sydney, Australia.

We ship worldwide from our warehouse in Sydney, Australia. Free shipping is available on Australian and New Zealand orders over $100, and on international orders over 150 in local currency.

Depending on your shipping location, your order may be subject to import taxes or other fees charged by your local customs.

Returns are accepted within 30 days of delivery if they are unworn, unwashed, and in their original packaging.

To submit a return, please visit the returns page.

For first pair guarantee requests, please complete the same form on the returns page and select "first pair guarantee" when asked. Please note that shipping costs are not refunded.

Every pair of Debriefs comes with a 52-wash guarantee. If your underwear develops holes, tears, or waistband failure within 52 washes, we'll replace them free of charge.

The guarantee covers manufacturing defects and fabric integrity issues, not damage from improper care or general wear and tear. Limited to 2 pairs per order.

When you sign up to a Debriefs subscription, you'll receive a fresh pair of undies every month for only $28. That's a saving of 22% off the standard price.

This allows you to gradually upgrade your top drawer with the softest, comfiest undies, without hurting your back pocket.

You'll also receive exclusive first access to the newest colours when they are released.

You're never locked in and you'll have full control over your subscription. Meaning you can change the product, skip a month, or cancel at any time.

If you would like to cancel your monthly subscription, simply login to your account and head to the subscription section.

From there you will find an option to “manage my subscription” where you can unsubscribe.

Yes of course! A Debriefs subscription is a great gift for a loved one.

The best way to gift a membership is to create an account for the giftee, set the billing address to yourself and then set the shipping address to them.

You will maintain full control over the subscription for its duration, unless you choose to transfer ownership to them.

You'll be charged for your subscription on the same day you signed up every month.

If we can’t process payment on that day, we will try again the next day and notify you if payment is still unsuccessful.

If you wish to change the day that you receive your Debriefs each month, you can do so in the subscription section of your account.