Size
Colour Mystery Single Pack
Our Mystery Women's Body Short is the ultimate surprise for your underwear drawer. You’ll get four premium women’s body shorts made from our signature super-soft, breathable bamboo fabric—but the designs? That’s for fate to decide.
We aim to dispatch your order 1-2 business days after placing your order.
Free shipping, no minimum spend.
NSW, VIC & QLD: approx. 1-3 business days after dispatch. WA, NT, TAS: approx. 2-4 business days after dispatch.
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, within 30 days.
Unworn items in original packaging can be returned or exchanged within 30 days of delivery.
Size chart
Measure around your natural waistline, tape snug but not tight.
On a line or between sizes? Size up. Tap a row to select that size.
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.
26M+ Pairs Sold
3,246 5-Star Reviews
2M+ Happy Customers
What customers say about Step One.
4.7 from 3,769 reviews of this product
All in soft, breathable bamboo viscose. Pick the coverage that suits you.

Love them or they're free. If you don't love your first pair, we'll give you a full refund.
They are made from high-quality, organically grown Bamboo Viscose. This material is incredibly soft, breathable, and moisture-wicking, keeping you cool and dry all day long.
Our SmoothFit™ technology ensures a seamless finish that doesn't dig in or leave visible lines under clothing. It's designed to stay in place while providing ultimate comfort.
Yes! Bamboo viscose is naturally hypoallergenic and gentle on sensitive skin, making it perfect for all-day wear without irritation.
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.
Machine wash cold with like colors. Tumble dry low or line dry in the shade. Do not bleach, iron, or dry clean to maintain the quality of the bamboo fabric.