ALURA
ZeroLine Thong
ZeroLine Thong
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ALURA's ZeroLine Seamless Thong is engineered for invisibility, comfort, and performance - the perfect base layer for your active lifestyle. Designed with a second-skin fit, breathable perforations, and a moisture-wicking inner lining, it keeps you cool, dry, and confident under any shorts or leggings.
ZeroLine Seamless Thong
Invisible Design: Seamless construction ensures nothing shows under leggings or shorts for a smooth, sleek look.
Breathable Airflow: Strategically placed perforations allow ventilation and keep you feeling fresh all day.
100% Cotton Inner Lining: Engineered with a honeycomb-pattern that absorbs moisture to reduce irritation where it matters most.
Second-Skin Comfort: Lightweight, high-stretch material that molds to your body and moves effortlessly with you.
Stay-Put Fit: Stays in place without rolling, shifting, or digging in.
Premium Nylon/Spandex Blend: Durable, ultra-soft, and built for all-day wear.
*Not eligible for promotional discounts, returns & shipping offers
FREE SHIPPING
FREE SHIPPING
Free Shipping on orders of 2 items or more
Express Shipping options available
Worldwide Shipping to over 50 countries
Learn more about shipping here
30 DAY RETURNS
30 DAY RETURNS
We know sizing can be difficult, so we offer size exchanges as long as the item is returned unused and in its original condition.
To help avoid this, please use our automatic sizer or sizing chart above to find your perfect fit.
We offer a hassle-free 30-day return policy if you're not satisfied with your item. Learn more here.
MODEL SIZE: S
MODEL SIZE: S
To ensure the perfect fit, please see the Sizing Chart in the next section.
We recommend to size down for a snug fit and size up for a more relaxed fit.
SIZING CHART
SIZING CHART
Try our Size Recommender next to the size picker (when available). It can recommend your ideal fit based on real data from people with a similar height, weight and age.

Customer Reviews
Based on 12,784 customers
Customers say this thong feels ultra-soft, lightweight, and truly seamless, with a barely-there feel that disappears under leggings and shorts. Many love that it stays in place, doesn’t dig in, and avoids visible lines, making it a go-to for workouts and everyday wear. Some note the fabric is very thin.
✧ AI-powered review summary based on recent customer feedback
great fit and seamless - perfect paired with the Captivate shorts for a workout. I will note that I measure 28” waist and 41” hips and order my Captivate shorts in size small for a snug compressive fit but ordered this in a medium and I think a small would have been too snug for comfort. So I recommended ordering on the larger size if you are between sizes or overlapping on the size chart like I am!
Perfect for working out.
Great fit!
Finally! Underwear that’s actually seamless, stays put, is true to size, and is also breathable. I’ve tried so many different brands but these win by a long shot.
I was looking for thongs that would stay in place!
Found them
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