The Everyday Thong - Sand

Key Benefits

• Twice as soft as cotton.

• Wicks moisture for up to 10 hours.

• Minimal visible panty lines.

• Breathable and antimicrobial gusset.

The Everyday Thong - Sand brings together sleek design and high-performance comfort in a barely-there silhouette. Crafted from TENCEL™ Micromodal, a natural fabric derived from cellulose, it’s twice as soft as cotton and breathable enough to wick away moisture for up to 10 hours. Designed to keep the skin dry and irritation-free, it feels light, smooth, and supportive all day long.

The gusset is made from 90% bamboo and carries antimicrobial properties, helping maintain freshness and supporting intimate skin health. With a flattering cross-over waistband and minimal visible panty lines, the thong fits securely while disappearing under clothing. Its adjustable rise and flexible stretch make it suitable for pregnancy and postpartum wear. The Everyday Thong - Sand is OEKO-TEX® certified, ensuring clean, non-toxic materials that are gentle on sensitive skin.

Underdays uses breathable fabrics that feel soft against the skin and adapt to your every move. Each piece carries the OEKO-TEX® certification, meaning it has been tested for harmful substances and proven safe for direct contact with your body. The fabrics offer all-day comfort without irritation, making them ideal for both busy routines and moments of rest.

Underdays was founded in December 2021 by Oria Mackenzie & Amelie Salas with a mission to reimagine underwear as a form of everyday self-care. Inspired by the idea that underwear should feel as good as it looks, the founders set out to create pieces that combine style, comfort, and performance. Each design is developed in collaboration with a gynaecologist to support women through daily routines, active moments, and everything in between. By focusing on breathable fabrics and thoughtful fits, Underdays empowers you to feel confident, supported, and comfortable every single day.

With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.

Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.

Material:
Fabric: 92% Tencel Micromodal, 8% Elastane
Gusset: 90% Bamboo, 10% Elastane

All fabrics are OEKO-TEX certified (HK020 196895 Testex)

Shipping

At Healf, we prioritize safe and fast delivery for all our customers. Our carefully selected couriers are Royal Mail and DPD.

UK standard delivery

Enjoy free standard delivery on orders above £50, this option usually requires 2-3 working days. If your order is under £50, this delivery option is available for £3.99.

Next working day

For when you need our products urgently, we offer next working day shipping for £5.99. For orders placed before 12.00, we will ship it the same day to ensure you receive your order the next working day.

International

International deliveries can take 7 working days, and up to 4 weeks. The cost is £22.99 for orders below £50, £49.95 for orders above.

Returns

If for any reason you are not satisfied with your order, we provide free 365-day UK returns for all our customers. To initiate your return, simply contact us at team@healf.com, and we'll send you a return slip and help arrange a collection. The item you return must be sent in the same condition as received and inside the original packaging. Once received, we will notify you via email.

For international returns, we unfortunately do not cover the cost. However, we work with an array of carriers and can offer self-posting returns for customers shopping from outside the UK.

Care:
Cool wash, 40° max.
Air-dry flat in a shaded area.
Do not iron or tumble dry.