Junior Trunk - NBL Perth Wildcats - Bamboo Underwear
Junior Trunk - NBL Perth Wildcats - Bamboo Underwear
Junior Trunk - NBL Perth Wildcats - Bamboo Underwear

Junior Trunk

$13

The Step One trunk, sized for kids.

4.7 (42)

Shop for

Boys Trunks Girls Shorties

Size

Colour NBL Perth Wildcats

1
  • Free shipping
  • 30-day First Pair Guarantee
  • Organically grown bamboo viscose soft and breathable
  • 30-day First Pair Guarantee love them or they're free
Description

Perth Wildcats Boys Trunks

Go wild with Wildcats pride in our Perth Wildcats boys trunks. Bring the energy whether you're at RAC Arena or backing the team from across the country.

Premium Comfort Features:

  • First Pair Guarantee - Love them or they're FREE
  • 3D Comfort Pouch - Hidden elastic technology surrounds you perfectly and keeps everything securely in place all day
  • UltraGlyde™ Anti-Ride Technology - Specially designed panels prevent annoying leg ride-up, so you stay comfortable from morning to night
  • Breathable Bamboo Viscose - Naturally moisture-wicking fabric keeps you cool and dry, produced sustainably in a closed-loop system
  • Premium Fabric Blend - 95% viscose made from bamboo, 5% spandex for the perfect stretch
  • Mix & Match Freedom - Combine any size, color, or style to create custom multi-packs

NBL Team Gear

Perfect for game day, every day, or as a gift for the Wildcats fan in your life. Because real fans show their colors from the inside out.

Fit & Fabric
Our Junior Trunk range is made from 95% viscose made from bamboo and 5% spandex. This equals an extremely soft and durable pair of underwear that wicks sweat brilliantly. The sizing is considered "fitted", meaning that if you are in between sizes, we would recommend sizing up.
Shipping

We aim to dispatch your order 1-2 business days after placing your order.

Free shipping, no minimum spend.

NSW, VIC & QLD: approx. 1-3 business days after dispatch. WA, NT, TAS: approx. 2-4 business days after dispatch.

Returns & Guarantee

We are so confident you'll love your Step Ones, we'll give you a full refund on your first pair if you don't like them for whatever reason, within 30 days.

Unworn items in original packaging can be returned or exchanged within 30 days of delivery.

  1. 30 Day First Pair Guarantee

    Not sure what size to get your child? No stress. Our 30 day first pair guarantee means there's no guessing when it comes to sizing and comfort.

  2. Ultra soft material

    Made from viscose made from bamboo, our designs are super soft and comfortable. Happy kids mean happy parents!

  3. Safe for sensitive skin

    Our bamboo material is naturally hypoallergenic and antibacterial, meaning all kids have to worry about is where they are going to play next!

Real Results from Real Customers

What customers say about Step One.

Rated 4.7 out of 54.7 from 42 reviews of this product

30-day First Pair Guarantee

Love them or they're free. If your kids don't love their first pair, we'll give you a full refund.

Shop Step OneLearn more

Frequently Asked Questions

What is Step One kids underwear made of?

Our kids range is made from high-quality, organically grown Bamboo Viscose with a touch of spandex. It's incredibly soft, breathable, and moisture-wicking — no itchy tags or scratchy seams.

Is it suitable for sensitive skin?

Yes! Bamboo viscose is naturally hypoallergenic and antibacterial, making it gentle on even the most sensitive skin.

What sizes do they come in?

The Girls Shortie comes in Ages 6-7 through to Ages 12-14, and the Junior Trunk covers Ages 2-3 through to Ages 12-14. Use the Find my Fit guide on this page to match your child's measurements to the right size.

How does the First Pair Guarantee work?

We are so confident your kids will love their first pair of Step One underwear that if they don't, you can keep them and we'll give you a full refund. No questions asked. This applies to your first single pair purchase.

How should I wash them?

Machine wash cold with like colors. Tumble dry low or line dry in the shade. Do not bleach, iron, or dry clean to maintain the quality of the bamboo fabric.