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Adult Tee / Totally Hyper Adult Tee / Totally Hyper Adult Tee / Totally Hyper Adult Tee / Totally Hyper Adult Tee / Totally Hyper Adult Tee / Totally Hyper

Totally Hyper Adult Tee

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  • Star IconColour changes with your body heat!
  • Star Icon The ultimate 90s throwback.
  • Star Icon Made in the USA.

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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.


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Same day dispatch if you order before 1pm AEST

Break out your boombox, rewind your mix tape, and strap on your skates because Totally Hyper serves some big Nostalgic energy. The ultimate 90s throwback, this colour-changing shirt will have you high-fiving yourself all day long.

We suggest you size up for an authentic 90s fit.
  • Fabric:
  • 100% Cotton
  • Ring Spun Cotton
  • Fabric weight 127gsm
  • Soft Handfeel
  • Special dyeing process which changes colour with heat
  • Wont fade over time, like the 90s version.
  • Details:
  • Rubber Stamp care label
  • Custom Knobby front print printed in Australia
  • T-Shirt made in USA
  • Packaged in a recycled and recyclable kraft card box
  • THE STYLE: We suggest to size up if you're between sizes.
  • 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.
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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!


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

Adult Tee / Totally Hyper
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