The same high-quality, organically grown bamboo viscose as the rest of the Step One range (95% bamboo viscose, 5% spandex). It's incredibly soft, breathable and moisture-wicking, so you stay cool and dry all day. The croc print is the only thing that's different.

Four: the Men's Boxer Brief, the Women's Bikini Brief, the Junior Trunk (boys aged 4 to 14) and the Girls Shortie (ages 6 to 14). Pick your style above the size selector. There are also two Crocz & Socks bundles pairing the boxer brief with a white or black crew sock.

The Ultraglyde™ panels are friction-resistant panels on the inner thighs that prevent chafing and stop the legs from riding up. They ensure your legs glide past each other rather than rubbing. You'll find them on the Men's Boxer Brief and the kids' styles.

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 colours. Tumble dry low or line dry in the shade. Do not bleach, iron, or dry clean to maintain the quality of the bamboo fabric.