

My Love is the Sea
Swallows mid-flight, roses in bloom, ships riding the swell

New Melange Range
Stonewash Grey & Desert Sage

Commandos
Don't go commando, get Commandos.

Maroon vs. Blue
Pick your side. Maroon vs. Blue.

CloudPress Pro
Compression that actually breathes

Yacht Rocks Vol. 3
Classic nautical stripes in timeless sage green.

New Release - X-Cup!
Jockstraps haven't changed in decades. Until now.

NiteKnit Sleepwear
Engineered for rest & recovery
Low as £10.40
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Add more pairs to unlock Mixed Colours bundles
Limited to one per order
Meet Crocz: a cheeky green gator print splashed across sunshine yellow, for the days you want your underwear drawer to have a bit of personality. Cut as a classic bikini brief with moderate coverage.
Why You'll Love It
Made from soft, breathable bamboo viscose that moves with you and wicks away moisture, so you stay comfortable whatever the day throws at you. Fun print, serious comfort.
Premium Features
Love them or they're free. First Pair Guarantee, every time.
We aim to dispatch your order 1-2 business days after placing your order.
Free shipping, no minimum spend.
GENERAL SHIPPING TIMES:
UK Mainland = approx. 2-3 business days after dispatch.
International shipping is available and calculated at checkout.
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.
Enter your measurements to get a size recommendation.
Measure around your natural waistline.
We couldn't match that measurement. Check the size chart below.
We recommend size
Step One underwear is designed for comfort. If you are between sizes, we recommend sizing up.
Underwear so comfortable, you'll forget you're wearing it.
Our SmoothFit™ technology provides a completely seamless finish, meaning no visible lines and no digging in.
Designed for everyday wear, providing a soft touch against your skin while staying perfectly in place.
Naturally hypoallergenic bamboo viscose is gentle on sensitive skin and prevents irritation.

Trust Score 4.5/5
Compare our styles to find your perfect fit.

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