Thinx Comfort Stretch Hi-Waist Period Underwear — All-Day Leakproof Protection (Slate, XS)

Meet THINX Comfort Stretch Hi-Waist Period Underwear

Designed for days when you need reliable protection with everyday comfort, THINX Comfort Stretch Hi-Waist underwear combines Thinx’s signature silhouettes with lace and mesh accents inside a silky, breathable fabric. The result is a pair that feels like regular underwear while offering built-in protection for your period or light leaks, whether you’re at work, running errands, or staying active.

All-Day Absorbency and Protection

The core is engineered for substantial flow, with the capability to hold up to the equivalent of 12 regular tampons. The interior layer can manage the equivalent of 3 regular pads’ flow, helping you stay comfortable throughout the day. Real-life use varies by person, and individual results may vary.

• Holds up to the equivalent of 12 tampons’ worth of flow for longer wear between changes.
• Core design supports up to 3 pads’ worth of flow for steady protection.

Leakproof Confidence, All Day

With the LeakSafe barrier, these period panties aim to provide leak protection for up to 12 hours. They can fully replace disposable products or act as a reliable backup to tampons or menstrual cups, depending on your flow and schedule.

• LeakSafe barrier offers dependable protection through busy days.
• Can serve as a complete replacement or as a convenient backup option.

Comfort, Fabric, and Care

Built from soft, flexible fabric, THINX Hi-Waist underwear feels comfortable enough to wear all day while still providing built-in protection. The design avoids PFAS and is eligible for FSA or HSA reimbursement, adding convenience for eligible shoppers.

• Feels like regular underwear with added leak protection.
• FSA / HSA eligible and PFAS-free for easier budgeting and care.

Why People Choose THINX

Since 2013, THINX has pursued sustainable solutions for menstruation and incontinence, aiming to spark conversation and build community. This product sits within that mission, offering a reusable, comfortable option that aligns with everyday life and changing needs.

Color and fit notes: Slate color offers a versatile look that pairs with many outfits, and XS sizing provides a secure fit for petite frames. The result is a versatile option you can reach for on workdays, travel days, or gym days alike.