THINX Ultra-Soft Overnight Sleep-Shorts – Leakproof Period Underwear, Holds Up to 12 Tampons

A luxurious, reusable solution for your period needs

Meet THINX Ultra-Soft Overnight Sleep-Shorts, designed to feel wonderfully gentle against the skin while delivering practical protection when you need it most. The main fabric is a buttery-soft Cotton blend crafted from SUPIMA Cotton and TENCEL Modal, creating a smooth, breathable surface that moves with you from bedtime to the next morning.

This sleep-short style offers powerful absorbency without compromising comfort. It holds up to 12 regular tampons’ worth of flow, and the core layer can manage the equivalent of about 3 regular pads’ flow. In real life you may notice peace of mind from the upgraded capacity, even during longer days or quick, late-night trips to the bathroom. Individual results may vary.

Leakproof protection that fits like everyday underwear

The built-in LeakSafe barrier is designed to provide leak protection for up to 12 hours, while the fabric stays flexible and comfy so you can wear them just like regular underwear. The result is a practical product you can rely on for overnight use or as a backup to other period care products.

• Comfort meets protection with a soft cotton blend and flexible fit
• Up to 12 hours of leak protection and up to 12 tampons’ worth of absorbency
• Odor control and moisture-wicking help you stay fresh and dry
• Reusable design suitable as a total replacement or an extra layer of security
• FSA/HSA-eligible for eligible purchases

Real-life use, thoughtfully designed

These underwear work well for overnight rests, long travel days, and busy mornings when you want dependable protection without changing products mid-day. They’re part of a broader mission to create comfortable, inclusive solutions for life’s leaks while encouraging sustainable habits.

• Wear as a full replacement for disposable period products or as a backup to tampons or cups
• Enjoy a dry, comfortable feel thanks to moisture-wicking fabric
• Benefit from a reusable option that supports sustainability
• Choose this style in classic black for everyday versatility

Since 2013, THINX has focused on comfort, performance, and inclusivity, aiming to spark conversation and community around a healthier approach to menstruation and leaks.