Underwear range at aussieBum - Wonderjock Pro Black Trunk

SPIN TO WIN
Live The Fantasy
Early 2025
Be among the first to own AR-XPLY's 'Cluster', a groundbreaking collection that redefines fashion and functionality.
*Please enter your email address
You're now registered
Something went wrong, Please try again.
Where You Truly Belong
Early 2025
Be the first to own our exclusive Mana-Maxx collection! Pre-order your favorites today and secure your style before they're gone. Limited stock available!
*Please enter your email address
You're now registered
Something went wrong, Please try again.
or
0
Early 2025
Be the first to own our exclusive Mana-Maxx collection! Pre-order your favorites today and secure your style before they're gone. Limited stock available!
You're now registered
Something went wrong, Please try again.
*Please enter your email address
Early 2025
Be among the first to own AR-XPLY's 'Cluster', a groundbreaking collection that redefines fashion and functionality.
You're now registered
Something went wrong, Please try again.
*Please enter your email address
Refer a friend TODAY & you both Get 10% off!*
Black
PRODUCT_BUNDLE_1 Media Image
PRODUCT_NEW_1 Media Image
Wj Pro - Hipster - Black
wj_pro (Original)
WJ Pro Black Lifestyle Image
WJ Pro Black Lifestyle Image
WJ Pro Black Lifestyle Image
WJ Pro Black Lifestyle Image
Wj Pro - Hipster - Black Video Image wj_pro (Original) Video Image WJ Pro Black Lifestyle Image WJ Pro Black Lifestyle Image WJ Pro Black Lifestyle Image WJ Pro Black Lifestyle Image Video Image
Clearance
Get elevated to the big leagues with WJ PRO. Featuring aussieBum’s pioneering and patented Pouch Enhancing Technology – now incorporating our 4D Grid Framing Technology, which contours and amplifies like never before. WJ’s Free Swing Boost provides separate gold star treatment for your prized assets, offering contained yet unconstrained support.
Choose from a selection of exciting colours and prints including the highly popular Geometric print and Marle tones.

Proudly Australian Made

90% Cotton 10% Elastane.

Image: Model Jacob is 6'1" (185cm) and has a 33" (84cm) waist. He is wearing a size L

• Side Seam Length M 19.5cm
• Stretch Cotton Elastane Body making them breathable and hold their shape
• Internal WJ Pro Pouch Technology that contours and amplifies
• Elasticised waistband with iconic aussieBum branding
• Leg binding for both comfort and support
• Flatlock stitching details that add strength to the fit
• Mid-rise for that classic aussieBum look
4.4 / 5 • 21 reviews
2 years ago
Peter Kilpatrick
Just the best ! No underwear can beat this! Just love it
2 years ago
Ryan Carter
These are so uncomfortable, and the sizing is completely wrong compared to any other underwear brand. Unwearable and I would love a refund.
2 years ago
Justin Smith
Comfy as gym support to everyday wear
2 years ago
Fredrik Sunden
I have noticed a change in the fabric on this model. I have worn these for 10yrs. Seems like a thinner/lighter cotton blend that does not give as much support although probably smoother on the skin. Happy to provide more detailed feedback.
2 years ago
David Prescott
A quality Australian made product that was good value on special and comfortable to wear.
3 years ago
zakariyya sheikh
Tell us what you think about this product. Use at least 10 characters.
4 years ago
Ok
Great cut, nice fit and feel
4 years ago
Orazio Raciti
There a great fit for me love them
4 years ago
Dan Mackinlay
I love the fit, although I wish the labels weren't sewn into the waistband. The corners dig in a bit, but they were fairly easy to remove.
5 years ago
David Provan
Not happy
5 years ago
재성 박
gooooooooooood!!!!
5 years ago
Andrzej Dziubek
well-matched, they fulfill their functions well
5 years ago
Cesar Ramirez
average. Dont like the feel
5 years ago
Will Hillis
Comfy all day long 😀
5 years ago
FERDINAND REYES
I’ve been ordering from Aussiebum for more than 10 years now and their product is just amazing. The WJ line is my favorite and this is my favorite. The fabrication is perfect. The garter is incredible, doesn’t “bacon” even after how many times I’ve place in the dryer in very high heat. this is not just true to the WJ line but all their products as well. I Am also photographer and I’ve used this in my male models they end up taking it home.
5 years ago
Erwan
Comfy and long lasting, I love how it makes me look when I wear under tight jeans :)
6 years ago
Dietrich WERNER
See comment before, but as already underlined before, i am Missing wj Air in this Sitzes
6 years ago
Evaldas
Nice looking undies
6 years ago
Robert Toro
This is my favourite
6 years ago
Tamas
The pocket in the front is a very good idea. I love it.
6 years ago
gregory smith
Simply the best
Show your aussieBums love and they will love you back for a long time to come.
Gentle machine wash in cold water.
Do not tumble dry (better for your aussieBums and better for the environment).
No need to get all fancy and take them to the drycleaners either (in fact, it’s better if you don’t).
And while we’re impressed that you like ironed clothes, do not iron your aussieBums.
Avoid rough surfaces
Note: placement of logo on waistband may differ.
For the best fit, match your sock size to your shoe size.
Sizes Uk/Aus Usa Eur Asia
S-M 7-8 8-9 41-43 S-M
L-XL 9-10 10-11 44-45 L-XL
Wrap a measuring tape around your hip bone line, making sure the tape is parallel to the ground. This measurement determines your waist size.
Sizes Inches Cm Eur Aus Asia
XS 28-29 70-75 2 12 S
S 30-31 75-80 3 14 M
M 32-33 80-85 4 16 L
L 34-35 85-90 5 18 XL
XL 36-37 90-95 6 20 XXL
XXL 38-39 95-100 7 22 XXXL
XXXL 40-41 100-105 8 24 XXXXL
Wrap a measuring tape around your nipple line, making sure the tape is parallel to the ground. This measurement determines your chest size.
Sizes Inches Cm
XS 34-36 86-91
S 36 - 38 91 - 96
M 38 - 40 96 - 101
L 40 - 42 101 - 107
XL 42 - 44 107 - 112
XXL 44 - 46 112 - 117
XXXL 46 - 48 117 - 122
Wrap a measuring tape around your hip bone line, making sure the tape is parallel to the ground. This measurement determines your waist size.
Sizes Inches Cm Eur Aus
S 30-31 75-80 3 14
M 32-33 80-85 4 16
L 34-35 85-90 5 18
XL 36-37 90-95 6 20
WJ Pro Black Main Image
We recommend measuring yourself and if your product doesn't fit, it's no problem. We have a 100% customer satisfaction policy on all Returns & Exchanges
|| ||
WJ Pro Black Main Image
WJ Pro Black Main Image
WJ Pro
Sale $14.95 USD (Inc. Sales Tax)
RRP $28.95 USD
Everyday lowest price
On Sale
-50%
WJ Pro Navy Main Image -50% WJ Pro Black Main Image -50% WJ Pro Green Main Image -50% WJ Pro White Main Image -50% WJ Pro Navy Main Image -50% WJ Pro White Main Image -50% WJ Pro Black Main Image -50% WJ Pro Navy Main Image -50% WJ Pro White Main Image -50% WJ Pro Red Main Image -50% WJ Pro Impression Orange Main Image -50% WJ Pro Impression Green Main Image -50% WJ Pro Impression Green Main Image -50% WJ Pro Impression Orange Main Image -50% WJ Pro Red Main Image -50% WJ Pro Blue Main Image -50% WJ Pro Impression Blue Main Image -50% WJ Pro Black Main Image -50% WJ Pro Green Main Image -50% WJ Pro Impression Orange Main Image -50% WJ Pro Impression Green Main Image -50% WJ Pro Blue Main Image -50% WJ Pro Red Main Image -50% WJ Pro Charcoal Main Image -50% WJ Pro Blue Main Image -50% WJ Pro Impression Blue Main Image -50%
This garment has a smaller than usual fit. We recommend buying one size larger than you would usually wear.
Hi mate,

Now for some good news, actually it's fantastic news. VAT (value-added Tax) for customers in the EU & UK is now prepaid! That means that you no longer have to pay any additional VAT when your order arrives in its destination country – its included in the price of your items.

Thanks to our shipping partners SEKO & DHL we can now offer VAT prepaid on all orders delivered to the following countries: Austria, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden & United Kingdom with more to be added in the near future.

We are so excited we can now offer this to all EU & UK customers. Our mission is to always produce the best quality made products at the most affordable price.

Thank you so much for being part of our Tribe, without you aussieBum would not be real.

Sean Ashby
Free Economy Shipping is included on all orders over $60 USD
If you’re not happy with your purchase you can return items, in original condition, within 90 days from date of receipt. *Excludes Sale items.
We also have a Customer Service team in-house so you know you're talking to a real aussieBum team member.
Free Economy Shipping is included on all orders over $60 USD
VAT Now Prepaid for EU & UK
Hi mate,

Now for some good news, actually it's fantastic news. VAT (value-added Tax) for customers in the EU & UK is now prepaid! That means that you no longer have to pay any additional VAT when your order arrives in its destination country – its included in the price of your items.

Thanks to our shipping partners SEKO & DHL we can now offer VAT prepaid on all orders delivered to the following countries: Austria, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden & United Kingdom with more to be added in the near future.

We are so excited we can now offer this to all EU & UK customers. Our mission is to always produce the best quality made products at the most affordable price.

Thank you so much for being part of our Tribe, without you aussieBum would not be real.

Sean Ashby
90 Day Returns*
If you’re not happy with your purchase you can return items, in original condition, within 90 days from date of receipt. *Excludes Sale items.
100% Satisfaction Guarantee
We also have a Customer Service team in-house so you know you're talking to a real aussieBum team member.
Underwear Swimwear Clothing Accessories
If you doubt yourself, wear something else!

© 2025 aussieBum, Inc. All Rights Reserved.