Michael Clarkewears Step One.

Shop Michael’s kit Why he switched

5 reasons you’ll replace your whole drawer.

Close-up of the Ultraglyde™ inner-thigh panel on Step One boxer briefs

No more chafing or ride-up.

Ultraglyde™ panels sit on the inner thigh, right where regular undies rub. They’re friction-resistant, so your legs glide past each other instead of chafing, and the legs stay where you put them. No more adjusting.

Close-up of the 3D Comfort Pouch on Step One boxer briefs

Supported all day.

The 3D Comfort Pouch has hidden elastic around it that keeps everything in place and separated. That means less friction, less sweat, and support that doesn’t feel restrictive, from your first coffee to your last meeting.

Close-up of the soft bamboo viscose fabric and waistband on Step One boxer briefs

Soft from the first wear.

Organically grown bamboo viscose is softer and smoother than cotton, with no breaking-in period. It’s breathable and moisture-wicking too, pulling sweat off your skin so you stay cool and dry. This makes both our underwear and socks the softest, most comfortable pair you’ll own.

Step One crew sock with the reinforced heel and toe highlighted

Socks that hold up.

A reinforced heel and toe take the wear where socks usually give out first. The 360° Arch Band hugs your foot, so they stay in place without digging in. They’re built to keep their shape and feel, wash after wash.

Man relaxed at home in Step One boxer briefs

Try them risk-free.

Wear them for 30 days, if you don’t love them, we’ll give you a full refund, and you keep them. We’re that sure you won’t go back to your old pairs.

Michael’s kit.

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In his own words.

The underwear brand that changed the game.

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What customers say about Step One
30 Days

First Pair Guarantee

Love your first pair or it’s free. Not convinced? Keep it and we’ll refund you in full.

  • Risk-free trial
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  • No questions asked
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Frequently asked questions

What are Step One undies made of?

High-quality, organically grown bamboo viscose. It's incredibly soft, breathable and moisture-wicking, keeping you cool and dry all day long.

Boxer Brief or Trunk?

The only difference is leg length: Boxer Briefs have 3 cm more than Trunks. Boxer Briefs usually suit guys with thicker legs, Trunks guys with thinner legs. Michael wears the Boxer Brief.

How does the Ultraglyde™ panel work?

The Ultraglyde™ panels are friction-resistant panels on the inner thighs that prevent chafing and stop the legs from riding up. Your legs glide past each other rather than rubbing.

How do the socks fit?

Unisex sizing from XS to XL, in black or white. A 360° arch band and a non-slip silicone grip keep them in place, with a reinforced heel and toe for the long haul.

How do the packs work?

Each pack bundles undies and socks at one price. Pick a size for every item in the pack; the sizes can differ, and each one is shown on the pack card as you choose.

How does the First Pair Guarantee work?

We are 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. No questions asked. This applies to your first single pair purchase.

How should I wash them?

Machine wash cold with like colours. Tumble dry low or line dry in the shade. Do not bleach, iron or dry clean.