MODEL_INFO=Model wears Size S

The Everyday Thong

£18

Core :

Limited Edition :

Size :

Size guide

XS S M L XL XXL

Product fit

1
2
-15%
4
-20%

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The Everyday Thong is a mid-rise thong designed for invisible, all-day comfort. The ultra-soft modal fabric and flat leg elastics mean zero visible panty lines under any outfit, including tight-fitting dresses, leggings, and light fabrics. The wider waistband sits securely without cutting in, and the longer gusset provides extra protection.

• Style: Mid-rise thong, minimal coverage


• Rise: Mid-rise but can be adjusted to your preference


• Coverage: Minimal back coverage


• VPL (Visible Panty Lines): None — this is Underdays’ best option for zero VPL


• Best For: Daily wear, under tight clothing, dresses, leggings, light fabrics

•Fabric: 92% Tencel Micromodal, 8% Elastane

•Waistband: Wide, soft self-fabric, no-dig, no-roll

•Gusset: Extra-long

•Leg Elastic: Flat comfortable elastic for no VPL

•Sustainability: Our gusset is made from TENCEL™
Modal—sustainably derived from trees and twice as soft as cotton. Gentle on the skin and made to feel like nothing at all.

•OEKO-TEX certified: All of the fabrics we use are independently certified by OEKO-TEX (SH015 210990 Testex), meaning all our underwear is free from harmful substances.

•Care: Machine wash cold, 40° max in a mesh laundry bag. Air-dry flat in a shaded area. Do not bleach. Do not iron or tumble dry.

  • We offer both Next Day Delivery and Standard Delivery

Size down for a snugger fit, size up for a more relaxed fit.
Exchanges available if the size isn’t right.

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Goodbye Discomfort.

No more digging in, riding up, or chafing.

Twice the softness of cotton

Our underwear is made from a TENCEL™ Modal, derived from trees and proven to be twice the softness of cotton. Designed to feel like a second skin.

Let your ____ breathe freely

TENCEL™ fibers are unfavorable for bacteria growth. They wick away moisture and keep you fresh through the day.

Ultimate comfort without the holes

Unlike traditional cotton, TENCEL™ Modal fabric is durable, tough and has a longer lifespan than its alternatives. Say goodbye to underwear that only lasts a few washes.

Ultimate Protection

Our gusset (the piece of fabric that keeps you covered) is 2cm longer than industry average and antimicrobial.

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Unrivalled Style

Say goodbye to conventional cuts or unflattering fits. We were tired of compromising comfort for style. Our design ethos is unparalleled comfort, unrivalled style.

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There is no competition

TENCEL™  modal antimicrobial fabric derived from trees

Approved by intimate health experts

12 hours of freshness and breathability

A gusset 2cm longer than industry average

Soft leg elastics designed to eliminate digging in

OUR MISSION

Everyday essentials, reimagined.

Crafted with care, backed by science, and perfected through 50+ rounds of testing with female health experts. We're turning underwear into self-care.

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Product details

Revolutionary underwear Underdays + You Underdays + You Underdays + You Underdays + You