Saalt | Reusable Period Care | Period Care Simplified | Saalt

Leakproof Seamless Thong

Leakproof Seamless Thong - Main image
$21.3 $30 In stock

Category: Workout Underwear

Slip into any outfit without rethinking your underwear.

This is the pair you put on and then promptly forget about. The one that lets you pull on leggings and skip the half-squat mirror check. Sleek, super-stretchy fabric and bonded edges create a smooth, second-skin feel that moves with you. Finished in barely-there nude shades that blend beautifully. The patented thinnest and driest gusset delivers light protection for light period leaks, discharge, and sweat, without bulk or stiffness. 

9/10 People Never Go Back

  • Jessica J

    I bought myself a few pairs and I'm not kidding when I say they are so comfortable and fit perfect, I would wear them every single day!!! I feel so good about replacing all the pantyliners I use when I am on my period. Thank you Saalt!

  • Euna

    I wanted to avoid panty lines and the bulk of pads while still wearing leggings at the gym. My solution was Saalt's seamless underwear. I was skeptical at first, but honestly they're very thin and comfortable making it the perfect thing to wear under leggings.

  • Michelle C.

    These are great! The period panties I've ordered from other brands feel like thin diapers mixed with granny panties. These are cute, they work, and I'm definitely going to buy more!

1 / of 3

Premium Design. Comfortable Fit.

Welcome to the thinnest, driest, and most comfortable leakproof underwear you'll ever wear.

  • Patented gusset

    technology

  • Reusable and replaces hundreds of pads and liners

  • Worry-free backup to a tampon, cup or disc

  • Not treated with PFAS

Your one-stop (sustainable) shop for all leaks.

Leakproof period underwear designed to withstand laughing with your best friend, the sweat of spin class, vivacious sneezes, and periods. It does it all, just like you.

Take good care of Saalt Wear leakproof underwear and it will take great care of you.

  • Rinse in cold water

  • Machine wash cold

  • Proudly hang dry

Do not use fabric softener or bleach to protect the tech | Do not iron

Do good every wear.

Saalt is a B Corp. That means we use business as a force for good and give 1% of revenue to donate period care to women and girls in need.

90-Day Saalt Bliss Guarantee

Love it or we’ll make it right. Love your Saalt products, or you have 90 days to return or exchange them. Why? We know that learning to use reusables can take time, but we're here to help and cheer you to Saalt bliss. Your Saalt(isfaction) guaranteed.

Customer Reviews (5.0 / 5 · 5 reviews)

Ruby ★★★★★

The seamless edges truly disappear under high-waist leggings—no lines, no readjusting mid-squat. The fabric is so light I actually forgot I had anything on during a full spin class.

Sophia ★★★★★

I’ve worn these on long runs and forget they’re even there—no bunching, no riding up, just total comfort under my leggings. The seamless cut is a game-changer for someone who was constantly adjusting other pairs mid-workout.

Eli ★★★★★

The seamless edges are so smooth under leggings that I genuinely forget I’m wearing anything—no digging, no lines, no constant adjusting during a long run. The leakproof layer gave me real peace of mind during a sweaty spin class, and they’ve held up perfectly after a dozen washes.