1 pair of Underdays =
✔️ 50 rounds of user-testing
✔️ Gynaecologist approved
✔️ Purposeful fabrics
✔️ Made in Europe
What they're saying about us
"The best briefs"
"This female founded lingerie brand is about to become your latest obsession"
"This intimates label serves a new generation of empowered women."
"The underwear brand that's rewriting sexiness"
Introducing the Thong Starter Pack
New to Underdays? It's time to invest in feeling good–– try our thong starter pack which brings together our three bestselling styles, for less.
We're changing the gusset game
Your gusset is that internal lining in your underwear that gets up close and personal with your most intimate parts. For too long, gussets have been too short and not given you enough coverage. At Underdays, we worked with a gynaecologist to change the gusset game. We added length and swapped cotton for bamboo—which is more breathable and hygienic for your body.