




We offer free standard shipping to every province and territory in United Kingdom.
We offer free standard shipping to every province and territory in United Kingdom. No minimum purchase is required, and all orders include tracking for your convenience.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Deliveries to United Kingdom’s outer and remote regions may experience seasonal delays caused by severe weather or limited carrier availability. We appreciate your patience and recommend allowing additional time for your order to arrive safely.
Thinx Ultra-Soft Period Underwear delivers a buttery-soft feel thanks to a breathable blend of SUPIMA cotton and TENCEL Modal. The brief-style cut sits close to the body, offering a secure, comfortable base for daily wear during your period. The Spicy with Lace option adds a stylish, confident touch without sacrificing comfort.
All-day absorbency and reliable protection are built in. The underwear holds up to the equivalent of 12 regular tampons, and the core can manage the flow of up to 3 regular pads. Individual results may vary, but many find it convenient for typical daily activities, commutes, and errands without frequent changes.
Leakproof design for all-day confidence. The LeakSafe barrier aims to guard against leaks for up to 12 hours, providing a practical alternative to disposable products or a backup to tampons or cups when needed.
Comfort that moves with you. The fabric is soft and flexible, so it feels like regular underwear while delivering built-in protection. They are PFAS-free and eligible for FSA / HSA plans in many regions, adding practical value for everyday use.
Designed for real life and sustainability. Since 2013, Thinx has aimed to create comfortable, inclusive products for menstruation and incontinence, with a reusable design that supports daily life, travel, workouts, and evenings out. Use cases include wearing under jeans or trousers for a discreet profile, or as a backup during travel or long days. The XL size offers a comfortable fit across a range of body types.
Explore the Spicy with Lace option for a stylish twist, while enjoying the practical benefits of a reusable, washable solution designed for long-term use.
Q: How absorbent is Thinx Ultra-Soft Period Underwear?
A: It holds up to the equivalent of 12 regular tampons, with a core handling the flow of about 3 pads.
Q: Is Thinx underwear suitable for everyday wear and reuse?
A: Yes, it is designed for all-day wear, is reusable, PFAS-free, and FSA/HSA eligible in many regions.
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