:
:
Preorder item
Delivery estimate is
Out of stock
You're on the list. We'll email you when it's back.
Whether you’re a studio owner, instructor, or creator, the Underdays Workout Programme brings together women who move. Let’s build something beautiful together.
What is the Underdays Workout Programme?
A new kind of brand partnership, designed to connect Underdays with fitness spaces that share our values: movement, style, and confidence from the inside out.
We’re bringing our Workout Collection to life through sponsored classes, community collaborations, and retail opportunities that celebrate women who move and live comfortably.
Three ways to get involved
Join the Underdays Affiliate Movement
Our affiliate community celebrates movement in all forms, from instructors to creators who inspire women daily. Earn commission, attend exclusive classes, and grow with a brand built by women, for women.
Why partner with Underdays?
Made by women, for women
We design underwear that feels like self-care — breathable, functional, and body-kind.
Build community
Bring something new to your studio experience — from sponsored events to retail pop-ups.
Create content that connects
Get featured on Underdays’ social channels and join a growing movement of studios, trainers, and creators.
Ready to move with us?
We’d love to hear from you. Tell us about your studio, your community, and how you’d like to collaborate.
Once you apply, our team will review your submission and be in touch with next steps.
@theunderdays
Follow on Instagram