Love them or they're free
Anti-Chafe Technology
Sweat-Wicking Bamboo Material
3D Elastic Pouch
![[EXP-A] Trunk - Black Currants - Bamboo Underwear - Model:Vince](http://uk.stepone.life/cdn/shop/files/240520_S1_1_MENS_0090.jpg?v=1746144286&width=1200)
![[EXP-A] Trunk - Scorpions - Bamboo Underwear - Model:Vince](http://uk.stepone.life/cdn/shop/files/240520_S1_1_MENS_0384.jpg?v=1717417345&width=1200)
![[EXP-A] Trunk - Ahoy Sailor - Bamboo Underwear - Model:Vince](http://uk.stepone.life/cdn/shop/files/240520_S1_1_MENS_0527.jpg?v=1746144286&width=1200)
![[EXP-A] Trunk - Smashed Avo - Bamboo Underwear - Model:Vince](http://uk.stepone.life/cdn/shop/files/240520_S1_1_MENS_0010.jpg?v=1717417415&width=1200)
![[EXP-A] Trunk - Snowballs - Bamboo Underwear - Model:Vince](http://uk.stepone.life/cdn/shop/files/240520_S1_1_MENS_0453.jpg?v=1717417381&width=1200)
Trunk
Mystery 4x Pack
£30 ea
Low as £25 with packs
Mystery 4x Pack
Low as £25 with packs
Anti-Chafe Technology
Sweat-Wicking Bamboo Material
3D Elastic Pouch
Pick Your Next Product
Anti-Chafe Technology
Sweat-Wicking Bamboo Material
3D Elastic Pouch
Why these are life changing
Super soft bamboo material keeps everything sweat-free
No-tug waistband provides maximum support and comfort
Perfect for casual to high activity, and everything in between
First Pair Guarantee - Love them or they're free!
Frequently purchased together...
Description
Our Mystery 4-Pack Men's Trunk is the ultimate surprise for your underwear drawer. You’ll get four premium men's trunks made from our signature super-soft, breathable bamboo fabric—but the designs? That’s for fate to decide.
Fit & Fabric
Our 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
FREE shipping is available on all orders in the UK!
We aim to dispatch your order 1-2 business days after placing your order.
International shipping is calculated at checkout.
We use Royal Mail Tracked 48 to ensure you get your product as fast as possible!
30 Day First Pair 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.
£30 ea.
What makes Step Ones special?
Ultraglyde™ panels
These friction resistant panels come with anti-chafe technology, so they prevent leg ride up and stop those awkward moments of re-adjusting in public!
3D comfort pouch
There’s a hidden piece of elastic around the pouch to surround you and your boys perfectly, keeping everything neatly in place!
Super soft bamboo viscose
This organic material, produced in a close-loop system, wicks away sweat and moisture and allows you to breathe all day long!