Skip to main content

${cart_popup.message}

Stand Out From The Pack - Shop Simply Ze Best
Men's Trunk / R-Whippy Men's Trunk / R-Whippy Men's Trunk / R-Whippy Men's Trunk / R-Whippy Men's Trunk / R-Whippy Men's Trunk / R-Whippy
4.9
Rated 4.9 out of 5 stars
3,602 Reviews

R-Whippy Men's Trunk

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

${ chosen_product_member_price | money} Members

  • Star IconUltra soft pin-hole BottleBlend® fabric
  • Star Icon Made from up to five plastic bottles
  • Star Icon Sanitized® bacteria and odour control

Choose Size: ${ chosen_size_abbreviated }

${ chosen_product_model_description }

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.

BUY MORE, SAVE MORE

${ chosen_product_price | money } each 1-3 bamboo items

${ (chosen_product_price*0.9) | money } each 4-6 bamboo items save 10%

${ (chosen_product_price*0.85) | money } each 7+ bamboo items save 15%

Notify Me When Available

Same day dispatch if you order before 1pm AEST

We're now serving our latest creation, an ice-cold collaboration with nine-time X-Games medalist, Nitro Circus Maverick, and all-around action sports legend, Ryan Williams.

We've harnessed Ryan's inner child and boundless playfulness to serve up this limited-edition collection, complete with a signature waffle cone, soft serve ice cream, topped off with a chocolate flake. Plus, we've sprinkled a touch of gold to represent the many medals R-Willy rocks around his neck. Get them before they melt!
  • Ultra soft pin-hole BottleBlend® fabric
  • Made from up to five plastic bottles
  • Sanitized® bacteria and odour control
  • 4cm band with plush inner microfleece
  • Lightweight 160 gsm for versatility and comfort
  • 88% Recycled Poly
  • 12% Spandex
  • Tagless with printed care label
  • Made ethically and sustainably in China
  • THE STYLE: This best-selling style is the perfect all-rounder! Created from BottleBlend®, our very own recycled material, containing up to five plastic bottles. Flatlock seams for comfort and an inseam length of 15cm to reduce ride-up and eliminate cheeky chafe.
  • THE FIT: Each of our products is crafted to meet global standards and follows true-to-size measurements. Please refer to our size guide. for more details.
  • 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 Customer Happiness Team within 30 days of receiving your Knobbys if you'd like to organise an exchange, refund, coupon or credit! More details

Men's Trunk / R-Whippy
R-Whippy Men's Trunk | ${ chosen_size_abbreviated } ${ chosen_product_price | money }

More From This Collection

Men's Long Leg / R-Whippy
4.9
Rated 4.9 out of 5 stars
1,174 Reviews

R-Whippy

Men's Long Leg
$35

$33 Members

Women's Bikini / R-Whippy
4.9
Rated 4.9 out of 5 stars
556 Reviews

R-Whippy

Women's Bikini
$35

$33 Members

Women's High Cut Brazilian / R-Whippy
4.8
Rated 4.8 out of 5 stars
313 Reviews

R-Whippy

Women's High Cut Brazilian
$35

$33 Members

Women's Shortie / R-Whippy
4.9
Rated 4.9 out of 5 stars
729 Reviews

R-Whippy

Women's Shortie
$35

$33 Members

Customer Feedback

4.9
Rated 4.9 out of 5 stars
Based on 3,602 reviews
Total 5 star reviews: 3.4k Total 4 star reviews: 172 Total 3 star reviews: 16 Total 2 star reviews: 8 Total 1 star reviews: 10
Slide 1 selected
3,602 reviews
  • Drew E.
    Verified Buyer
    Rated 5 out of 5 stars
    2/11/25
    Dope

    Comfy as

  • Shane R.
    Verified Buyer
    Rated 5 out of 5 stars
    2/9/25
    Chick chick boom trunks....look great

    Super comfortable and great length

  • Deraulle C.
    Verified Buyer
    Rated 5 out of 5 stars
    2/4/25
    Love it!

    Such a great set! Absolutely love the design. Please do more like this!!!

  • Michael S.
    Verified Buyer
    Rated 5 out of 5 stars
    1/23/25
    Cluckin Orsm

    As usual comfy as **** and amazing. Wants to have me crowing from the barn yard roof

  • kym r.
    Verified Buyer
    Rated 5 out of 5 stars
    1/22/25
    A classic!

    Finally added this classic design to my Knobby collection. As always, incredibly comfortable and well made. I really love this older design to, more so now that they're on 😆🍋🍋

  • kym r.
    Verified Buyer
    Rated 5 out of 5 stars
    1/22/25
    An amazing design

    My wife and I are both Knobby addicts! We particularly love the themes of water so both loved this design. I bought both the men's design as I loved the subtle differences in the actual design and the materials. I think I'm finally leaning towards the naturals as the preference. As always, killer comfort and design 👍

Reviews LoadedReviews Added

Frequently Asked