The Workout Thong

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•No more unwanted distractions during a workout

•Minimal VPL
•Fast-drying, sweat-wicking technology
•Antimicrobial bamboo gusset
•Four-way stretch
•Made from 84% Recycled Nylon
•Contrast stitching detail

Black

Size

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•Free 30-day returns. (T&Cs apply)
•Orders containing items on sale or free items are not eligible for returns.

•84% Q-NOVA® Recycled Nylon, 16% Elastane Lycra
•Gusset: 90% Bamboo, 10% elastane
•All fabrics are OEKO-TEX certified

To get the most out of your underwear we recommend following these steps:
•Cool wash, 40° max
•Air-dry flat in a shaded area
•Do not iron or tumble dry

•We offer both Next Day Delivery and Standard Delivery
•Free 30-day returns. (T&Cs apply).
•Orders containing items on sale or free items are not eligible for returns.
•Items shipped outside the UK may be subject to import duties and taxes applicable to your country or country you are shipping to. Customers are solely responsible and liable for any duties or VAT that are specific to their country.

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The Tank

The Everyday Thong

The Lingerie Thong

The Workout Thong

Alfie x Underdays Capsule Collection

Where the effortless feminine meets the everyday luxury.

We've partnered with Paris-based label luxury label ALFIE to create a limited edition capsule set of elevated summer essentials.

A collection with a “borrowed from the boys” feel, this launch celebrates ALFIE’s signature boxer shorts and Underdays’ solutions-driven design—all crafted from a luxury deadstock cotton sourced in Paris.

PRE-ORDER NOW

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