Mara S.
and 45.6k+ others across the UK love Isaberry
Sheerly™ – Seamless Leak-Proof Period Thong + 50% OFF
Free shipping with Royal Mail
30-day money-back guarantee
45,600+ happy customers
Only 8 items left for this price
Finally. A Period Thong That Feels Like Nothing — and Protects Like a Pro.
You shouldn't have to switch to granny underwear just because your period showed up.
Most period underwear works — but feels like wearing a pull-up. Sheerly™ is different: it's a real thong, with a built-in 4-layer leak-proof lining that holds up to 1.5 tampons' worth — invisibly, all day.
That means no panty lines. No bulk. No thinking about it.
Just soft, seamless protection you can wear under leggings, jeans, or a bodycon dress — and forget you even have it on.
Why 10,000+ Customers Love Sheerly™
✔ No more ugly period underwear that shows through your outfit - Sheerly™ has a seamless outer shell that sits flush against your skin — no ridges, no lumps, no visible panty lines. You can wear it under your tightest leggings or your favorite white jeans and no one will ever know.
✔ Finally leak protection in a thong that actually works - Don't be fooled by how thin it looks. Inside Sheerly™ is a thick, double-stitched, 4-layer liner — a breathable skin layer, a rapid-absorb microfiber core, a moisture-wicking mid layer, and a waterproof outer barrier — so fluid stays locked in, not on you.
✔ Buttery soft all day, no shifting, no bunching - Reviewers say they "can barely tell they're wearing anything at all." The ultra-soft, stretchy fabric moves with your body — and the waistband stays put, whether you're at your desk or at the gym.
✔ Premium period protection at a fraction of the brand-name price - Get the same 4-layer leak-proof technology as the big brands — without the big brand price tag. Buy 3 pairs, get 1 FREE. Buy 5 pairs, get 2 FREE. Stock your drawer and stop worrying about every period week.
FAQ
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Can I wear this on heavier flow days? Sheerly™ holds up to 1.5 tampons' worth of fluid — perfect for light to moderate days, or as reliable backup on heavier days when paired with a tampon or cup. For very heavy flow, we recommend changing every 6–8 hours.
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How do I wash it, and how long will it last? Rinse in cold water after wear, then machine wash on a gentle cycle. Skip the dryer — air dry to keep the liner working at full strength. With proper care, each pair holds up wash after wash without losing shape or absorbency.
Specifications
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Absorbency: Holds up to 1.5 tampons' worth of fluid — ideal for light to moderate flow days
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Construction: 4-layer leak-proof system — breathable skin contact layer, microfiber absorbent core, moisture-wicking mid layer, waterproof outer barrier
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Design: Truly seamless thong silhouette — PFA-free, no visible panty lines, ultra-soft stretch fabric, waistband stays in place all day
Press "ADD TO CART" now —get your 50% off offer! on Sheerly™! This offer is available for a limited time only!
Free shipping on all orders - All orders are shipped free of charge.
24/7 customer service - Our customer support team is available daily to answer all your questions.
30-day money-back guarantee - If your experience is not positive for any reason, we will do everything we can to ensure you are 100% satisfied with your purchase.
