Leakproof Thong
The original Double Undies®
A moisture-wicking layer keeps you feeling fresh, while the strategically placed padding on the coccyx adds comfort and helps absorb sweat right where you need it. Made with our Dri-flex™ fabric, they stretch to fit a wide range of body shapes and sizes without compromising support.
Oh—and they’re washable and reusable, making them as good for the planet as for your confidence. Each pair comes with a waterproof bag for life on the go because your gear should work as hard as you do.

Leakproof Thong
FAQs
Our undies are built differently. Designed for active women, Double Undies feature a patented “winged” leak-proof design with a double-layer absorbency system that holds over 30ml (that’s more than 6 tampons), giving you peace of mind through workouts, long days, or surprise leaks.
No. They’re designed to feel smooth and lightweight while providing targeted support.
These undies are super stretchy, so we’d recommend sizing down if you’re between sizes.
No. They’re made with smooth, laser-cut edges to stay invisible under tight workout gear.
Absolutely! They’re designed to be comfortable enough for all-day wear, working out, or not. Feel confident in & out of the gym.
Over 30ml. Equivalent to 6 Tampons.
Designed to help manage light bladder leaks during everyday activity. Individual results may vary.
- Main: 84% Nylon / 16% Elastane
- Inner Gusset: 100% Cotton
- Absorption Lining: 80% Polyester / 20% Cotton
- Leak Proof Lining: 100% Polyester
Wash before wear
Cold gentle machine wash
Do not use fabric conditioner
Do not bleach
Do not iron
Do not dry-clean
Our bag is made from 100% recycled plastic bottles — because looking good and being kind to the planet can go hand in hand. But it’s not just for looks — it’s designed to be practical too. After your workout, you can pop your Double Undies into this waterproof bag and head out without worrying about leaks or odours.
And if you want to keep things discreet? Just peel off the sticker — no one will know it's an absorbent undie.