Skip to main content

${cart_popup.message}

Free domestic shipping over $99 Shop Now
Men's Brief - Naturals / I Don't Think Theysaurus Men's Brief - Naturals / I Don't Think Theysaurus Men's Brief - Naturals / I Don't Think Theysaurus Men's Brief - Naturals / I Don't Think Theysaurus Men's Brief - Naturals / I Don't Think Theysaurus Men's Brief - Naturals / I Don't Think Theysaurus
4.8
Rated 4.8 out of 5 stars
111 Reviews

I Don't Think Theysaurus Men's Brief - Naturals

${ product_price | money }

${ chosen_product_member_price | money }

${ product_chosen.compare_at_price | money } ${(100 - ((product_chosen.price/product_chosen.compare_at_price)*100)).toFixed(0)}% Off

${ chosen_product_member_price | money} Members

  • Star IconSofter than bamboo and melted butter
  • Star Icon Made from 100% traceable TENCELª Modal fibers
  • Star Icon So comfy and breathable, you'll want to sleep in it

Choose Size: ${ chosen_size_abbreviated }

CONGRATULATIONS! SAVE 15%

Knobby Undie Club members save 15% on most products. Discount will automatically be applied once the item is added to your bag. To add another subscription, head over to your member portal.

Notify Me When Available

Same day dispatch if you order before 1pm AEST

Hidden in plain sight... Is that a Stegosaurus in your pants or are you just happy to see me?

Camouflage is a defence or tactic used to disguise a species' appearance so they blend with their surroundings & remain stealthy AF. This is vital for survival & also ambushing prey. It works both ways!

Knobby has decided to put a prehistoric twist on it!

We’ve hidden 4 dinosaurs in our latest drop! Can you spot what species of dinosaur lurk in our colourful camo design ‘I-Don’t-Think Theysaurus’? Let’s take a look & brush up on your Dino knowledge while we are at it!
  • TENCEL Modal - Derived from natural raw wood
  • Naturally soft and smooth to the touch
  • Naturally dry sensation with moisture control
  • Certified carbon-neutral with traceable technology
  • Lightweight 160 gsm for versatility and comfort
  • 4cm band with plush inner microfleece
  • Tagless with printed care label
  • Made ethically and sustainably in China
  • THE STYLE: Traditional short and snug brief style mens underwear. Perfect for the office, active lifestyles or home on the couch.
  • THE FIT: Each of our undies are made to a global standard. They are true-to-size, so order whatever size you would typically order for shorts. See our size guide.
  • THE MODEL: ${ chosen_product_model_description }

Each pair of Knobbys will arrive in a custom designed, certified kraft paper package or a sealed paper pouch and postage bag made with cornstarch, which is 100% compostable!

All our Australian printed papers and cardboards are recyclable, FSC certified and made carbon neutral, because we give a shit.

Our mission is to be the most sustainable underwear brand in the world.

FREE Standard Domestic Shipping for orders over $100

$9.50 Standard Domestic Shipping for orders under $100

Order before 1pm AEST on weekdays and we'll dispatch the same day!

Returns

Get in touch with our Support Ninjas within 30 days of receiving your Knobbys if you'd like to organise an exchange, refund, coupon or credit! More details

Men's Brief - Naturals / I Don't Think Theysaurus
I Don't Think Theysaurus Men's Brief - Naturals | ${ chosen_size_abbreviated } ${ chosen_product_price | money }
Lightbulb Icon

Unique
Designs

Smiley Face Icon

Unbeatable
Comfort

Earth Heart Icon

Sustainably
Made

Step into a world of amazing underneaths that are ridiculously good and sustainably comfy

Main Product Image
Star Icon Exclusive Unique Design

Hidden in plain sight... Is that a Stegosaurus in your pants or are you just happy to see me? Camouflage is a defence or tactic used to disguise a species' appearance so they blend with their surroundings & remain stealthy AF. This is vital for survival & also ambushing prey. It works both ways! Knobby has decided to put a prehistoric twist on it! We’ve hidden 4 dinosaurs in our latest drop! Can you spot what species of dinosaur lurk in our colourful camo design ‘I-Don’t-Think Theysaurus’? Let’s take a look & brush up on your Dino knowledge while we are at it!

Feature Image With Arrows
Star Icon Comfort & Fit

Experience unmatched comfort with our products:

  • Star IconSofter than bamboo and melted butter
  • Star Icon Made from 100% traceable TENCELª Modal fibers
  • Star Icon So comfy and breathable, you'll want to sleep in it

We've designed it specifically for a snug fit that's perfect for everyday wear.

Made with Recycled Ocean Bound Plastic Bottles
Star Icon Sustainability

In a world striving for sustainability, our products stand out. Made from an innovative eco-friendly bottle blend fabric, they not only offer comfort but also reflect a commitment to a greener planet.

The Design Details
"I Don't Think Theysaurus" by Knobby (Artist Inhouse / Phillip Ramskill)

Get The Full Collection

Men's Trunk / I Don't Think Theysaurus
4.9
Rated 4.9 out of 5 stars
3,208 Reviews

I Don't Think Theysaurus

Men's Trunk
$33

$25 Members

Men's Trunk - Naturals / I Don't Think Theysaurus
4.9
Rated 4.9 out of 5 stars
93 Reviews

I Don't Think Theysaurus

Men's Trunk - Naturals
$34

$27 Members

Bamboo Crew Socks / I Don't Think Theysaurus
4.9
Rated 4.9 out of 5 stars
362 Reviews

I Don't Think Theysaurus

Bamboo Crew Socks
$23

$20 Members

Women's Bralette / I Don't Think Theysaurus
4.9
Rated 4.9 out of 5 stars
462 Reviews

I Don't Think Theysaurus

Women's Bralette
$33

$29 Members

Customer Feedback

4.8
Rated 4.8 out of 5 stars
Based on 111 reviews
Total 5 star reviews: 93 Total 4 star reviews: 16 Total 3 star reviews: 2 Total 2 star reviews: 0 Total 1 star reviews: 0
Customer-uploaded media carousel. Press left and right arrows to navigate. Press space or enter to open more details.
Slide 1 selected
111 reviews
  • David M.
    Verified Buyer
    Rated 5 out of 5 stars
    10/3/24
    Comfy undies

    Love these colours. The naturals are really comfy and love the new cut.

  • Simon T.
    Flag of Australia
    Rated 5 out of 5 stars
    5/22/24
    Fantastic comfort

    Fantastic comfort with a totally wicked design. Love them

  • Zach
    Flag of United States
    Verified Buyer
    Rated 4 out of 5 stars
    5/9/24
    They are back!

    They just arrived. Super soft material, and they fit great. So happy they brought back briefs.

  • Corey C.
    Flag of Australia
    Rated 5 out of 5 stars
    10/5/23
    Love the designs

    So many beautiful colours!

    Love the style and the fit is amazing

  • Owen S.
    Flag of Australia
    Rated 5 out of 5 stars
    8/27/23
    Thank goodness for briefs

    I love the idea of a mystery pack, it’s a good way to get a variety and save a few bucks. Great value.

  • Shaun H.
    Verified Buyer
    Rated 5 out of 5 stars
    10/15/24
    Super comfy

    Super comfy and easy to find in the washing what more could you ask for. Almost feels like wearing nothing to be honest. No pinching around the legs or the lap hog.

Reviews LoadedReviews Added

Join the Undie Club and save on every order.

LAST MONTHS DESIGN
Last Month's Design Last Month's Design Last Month's Design

A Club with Benefits

Club Members Get These Perks:
Legendary Savings
Legendary Savings

Save up to $13 per pair and get 15% off storewide!

Free Shipping
Free Shipping

Free AU Shipping on every order.

Your Club, Your Rules
Your Club, Your Rules

Pause, cancel, change size, add styles or adjust the frequency they arrive at any time!

V.I.P Access
V.I.P Access

V.I.P access to new designs, product releases, and occasional matching goodies!

Frequently Asked