Step One black boxer briefs and black crew socks

Your everyday upgrade

Undies and socks. Comfort, sorted.

Soft bamboo-viscose boxer briefs with Ultraglyde™ anti-chafe panels. Bamboo-blend crew socks with arch support and reinforced heels and toes.

Shop undies + socks

The details make the difference

10 reasons to upgrade your undies and socks.

Purple boxer brief with the anti-chafe panels on the inner thighs outlined and labelled

1

Say goodbye to chafing.

Our Ultraglyde™ panels sit between your thighs, so your legs glide past each other instead of rubbing. It’s the feature Step One was built on.

Smiling man in grey boxer briefs, relaxed and standing tall

2

Less ride-up. Less adjusting.

The same friction-resistant panels help stop the legs creeping up. Your undies stay where they should, so you can stop pulling them back into place.

Close-up of the 3D Comfort Pouch seam on a teal boxer brief

3

Give your boys some space.

The 3D Comfort Pouch uses hidden elastic to keep everything supported and separated. Less skin-on-skin contact, less friction and no constant rearranging.

A hand resting on the soft fabric of a teal boxer brief

4

Soft from the first wear.

Our boxer briefs are made with 95% bamboo viscose and 5% spandex. Soft against your skin, with stretch to move with you.

Close-up of teal bamboo boxer brief fabric drawing water droplets in

5

Keep the swamp out of your undies.

Bamboo viscose wicks moisture away from your skin and lets it breathe. Stay more comfortable from your morning coffee to whatever comes after work.

The socks

White crew sock with the heel and toe zones highlighted

6

Stronger where socks wear out first.

The heel and toe take the most wear. We reinforce both, with polyamide in the blend for strength where your socks need it.

Hand feeling the soft fabric of a white Step One crew sock

7

Give your feet the soft treatment.

Our socks contain 35% bamboo viscose, blended with polyamide, cotton and elastane. Soft and breathable from the first wear, with strength and stretch built in.

Crew sock with moisture lifting away from the fabric

8

Less damp. More comfortable.

The sock blend draws moisture away from your skin and lets air move through the fabric. It helps your feet stay drier inside your shoes.

Crew sock with the band around the arch highlighted

9

Socks that stay in their lane.

A 360° arch band wraps around your foot to help keep the sock in place. Less twisting, less bunching under your heel.

Crew sock with the cushioned sole highlighted

10

A softer landing for your feet.

Cushioning underfoot adds comfort where you feel every step. Made for long days standing, walking or running.

Even more reasons to make the switch.

Your first order. 20% off.

New to Step One? Sign up and we’ll email you a code for 20% off your first order. Enter it at checkout.

Free shipping. No minimum spend.

We ship every UK order for free. Pick your kit, choose your sizes and we’ll take care of the shipping.

Try your first pair. We’ll take the risk.

Wear your first pair for up to 30 days. If you don’t love them, we’ll refund your first pair. You can keep the pair you’ve tried. First-pair coverage only, not the whole pack.

26M+ pairs sold. And counting.

Comfort worth coming back for.

Choose your everyday kit.

Pick your pack, then choose your undies and sock sizes. New here? Get 20% off your first order.

Choose your pack

Find your fit

  • Free UK shipping
  • 30-day First Pair Guarantee
  • 26M+ pairs sold
  • Ridiculously soft bambooBamboo viscose blend that feels luxurious from the first wear.
  • 3D Comfort PouchAnatomically designed pouch keeps everything separated and supported.
  • 360° arch supportA support band hugs the arch for a secure, custom-feel fit.
  • Anti-chafe Ultraglyde™ panelsFriction-resistant panels stop chafing and ride-up, all day.

Size guide

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Questions, sorted.

What’s in each kit?

The Duo includes two black boxer briefs and two pairs of black crew socks. The Trio includes three of each.

Can I choose different sizes for my undies and socks?

Yes. Choose your underwear size and sock size separately in the kit selector.

What are the undies and socks made of?

The boxer briefs are 95% bamboo viscose and 5% spandex. The socks are 47% polyamide, 35% bamboo viscose, 15% cotton and 3% elastane.

Which sock style comes in the kit?

Both kits include black crew socks. The feature images on this page show the wider range.

How do I get 20% off my first order?

Sign up using “Get my 20% off” and we’ll email you a code. Enter it at checkout on your first order.

Is shipping free?

Yes. Shipping is free on UK orders, with no minimum spend.

How does the First Pair Guarantee work?

Try your first pair for up to 30 days. If you don’t love them, we’ll refund your first pair, and you can keep them. The guarantee covers the first pair, not the whole pack. See the First Pair Guarantee terms for details.

Your everyday upgrade starts here.

Pick your undies-and-socks kit. Choose your sizes. Get your drawer sorted.

Choose your everyday kit Get my 20% off