Men's Bamboo Underwear
Anti-chafe panels and sweat-wicking bamboo viscose in Boxer Brief, Trunk, Fly and Sport.
- Free shipping
- 30-day First Pair Guarantee
Boxer Brief
Shop Boxer Brief
Boxer Brief
Shop Boxer Brief
-
Best Sellers
Black & Grey
$22
-
Core Colors
Grey
$22
-
Limited Edition
Sapphires
$22
Trunk
Shop Trunk
Trunk
Shop Trunk
-
Best Sellers
Black & Grey
$22
-
Core Colors
Grey
$22
-
Limited Edition
Ember Wave
$22
Boxer Brief Fly
Shop Boxer Brief Fly
Boxer Brief Fly
Shop Boxer Brief Fly
-
Core Colors
Black & Grey
$22
Boxer Brief Sport
Shop Sport
Boxer Brief Sport
Shop Sport
-
Core Colors
Hulks
$22
Socks
Shop socks
Socks
Shop socks
-
Crew Sock
White
$13
Real Results from Real Customers
What customers say about Step One.
TrustScore 4.5
30-day First Pair Guarantee
Love them or they're free. If you don't love your first pair, we'll give you a full refund.
Frequently Asked Questions
What's the difference between a Boxer Brief and a Trunk?
Leg length. The Boxer Brief has a 6" inseam and suits thicker legs. The Trunk is 4" and suits thinner legs.
What type of underwear is best for me?
Here's our buying guide:
Boxer Brief: 6" inseam, designed for thicker legs
Trunk: 4" inseam, ideal for thinner legs
Boxer Brief Fly: easy access fly, great for work
Boxer Brief Sport: 8" inseam, extra length for exercise
How do I choose the right size?
Every product page has a size chart and a fit finder. If you're between sizes, we suggest sizing up. Use Shop by size at the top of this page to see every style in stock in your size.
How does the First Pair Guarantee work?
We're so confident you'll love your first pair of Step One underwear that if you don't, you can keep them and we'll give you a full refund. This applies to your first single pair purchase.