Skip to main content

${cart_popup.message}

It's Frooty Booty time. Shop our latest collection
Boys Trunk / Summer Bummer Boys Trunk / Summer Bummer Boys Trunk / Summer Bummer Boys Trunk / Summer Bummer

Summer Bummer Boys 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 IconMade from up to five plastic bottles
  • Star Icon 3cm band with plush inner microfleece
  • Star Icon Perfect for even the fussiest little groms

Choose Size: ${ chosen_size_abbreviated }

${ chosen_product_model_description }

Choose ${ product_options[1] }:  ${ product_chosen_option2 }

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

In the sun-soaked waves, Groms rule, and the Sharks stand guard. With epic swells cranking, they fend off aggro surfers, so the young ones can hang loose.
  • Made from up to five plastic bottles
  • Ultra soft pin-hole BottleBlend® fabric
  • 3cm 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: Created from BottleBlend®, our very own recycled material, containing up to five plastic bottles. Ultra light and stupendously soft! This best-selling style is the perfect all-rounder, which breathe to keep you cooler than a tub of neapolitan ice cream.
  • 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

Boys Trunk / Summer Bummer
Summer Bummer Boys Trunk | ${ chosen_size_abbreviated } ${ chosen_product_price | money }

More From This Collection

In The Wild!
Tried Them, Loved Them.

Customer Feedback

Frequently Asked