




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.
Experience a feel-like-silk upgrade for your period with a buttery-soft fabric blend built to glide against the skin. The main material mixes SUPIMA cotton with TENCEL Modal for a luxurious, breathable touch that moves with you—from morning meetings to evening workouts. The design blends functional protection with a flattering silhouette, featuring a refined lace detail for a touch of everyday elegance.
Thoughtful engineering helps manage flow across the day, so you can focus on the moment. The integrated core is designed to handle substantial protection while staying discreet under clothing. Individual results may vary, but the system aims to provide consistent coverage through your busiest hours.
The LeakSafe barrier is built to help protect against leaks for up to 12 hours. The fabric is flexible and comfy enough to wear like ordinary underwear, giving you a secure feeling without added bulk. It can serve as a full replacement for disposable products or as a backup to tampons or menstrual cups.
PFAS-free and FSA/HSA eligible, the underwear combines luxury fabric with practical care. The garment is designed for repeated wear and easy care, supporting a more sustainable approach to periods without compromising comfort.
Whether you’re at the office, on a gym run, or traveling, this underwear aims to fit into your routines naturally. It speaks to everyday needs: comfort under workwear, confidence during activities, and simplicity in laundry days.
THINX champions sustainable solutions for life’s leaks since 2013. The Hi-Waist line reflects a commitment to inclusive, comfortable products that work with you—not against you.
Q: How much absorbency does THINX Ultra-Soft Hi-Waist Underwear provide?
A: It holds up to 12 regular tampons' worth of flow, with a core that can handle up to 3 tampons' worth of pads; results vary.
Q: How long can THINX be worn before changing?
A: Provides all-day protection up to 12 hours and can replace disposables or serve as a backup to tampons or cups.
Shipping (UK)
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