

Crocz
Green gator print, across men's, women's, and kids' styles.

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.

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
Some bunny's been leaving surprises in your underwear drawer. Our "Bad Bunniez" limited edition design brings playful springtime charm to your essentials—because who says Easter treats are just for kids?
Why You'll Love Them:
Made with certified FSC organic bamboo fabric, these bikini briefs deliver eco-friendly luxury that feels as good as it looks. The naturally hypoallergenic bamboo is perfect for sensitive skin, while advanced moisture-wicking technology keeps you feeling fresh and dry all day long.
The irresistibly soft waistband sits comfortably without digging in—so soft you'll forget you're wearing anything at all. The lightweight, flexible fabric moves with you, whether you're on an Easter egg hunt or conquering your Spring to-do list.
Premium Features:
Limited Edition Easter Release
Available for a limited time only. Treat yourself to something that actually fits in your basket—and on you. These hoppy beauties combine sustainable luxury with Easter fun.
Hop into spring with comfort that's egg-stra special.
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.