Meet the leakproof knicker designed for everyday life. While The Polly handles your heaviest days, the NIXI Body Coni Black Leakproof Knicker is your go-to for light periods, the start and end of your cycle, bladder leaks, discharge, and sweaty gym sessions — all in a VPL-free, super high-waist design that disappears completely under gym leggings and activewear. Four discreet layers of absorbent gusset holding up to 10ml (1-2 tampons worth), a waterproof TPU barrier, and a sleek black colourway that works under everything. Washable, reusable, and genuinely better for you and the planet. From just £22.00, this is the everyday confidence knicker that earns a permanent place in your underwear drawer.
The Coni vs The Polly — Which One Do You Need?
NIXI Body's two hero products serve different needs. The Polly (also available at ALTOE) holds up to 25ml — perfect for heavy periods and overnight protection. The Coni holds up to 10ml — designed for lighter protection needs: the start and end of your period, light bladder leaks, discharge, and exercise. The Coni's super high-waist VPL-free design also makes it the activewear-friendly choice — completely invisible under gym leggings and tight-fitting clothing where The Polly's lace details might show. Many women own both: The Polly for heavy days and overnight, The Coni for everyday wear and the gym.
What Makes The Coni Special?
- 🏋️ Invisible under gym leggings & activewear — the VPL-free super high-waist design is specifically engineered to disappear under tight-fitting gym leggings, cycling shorts, and activewear. No visible panty line, no bunching, no riding up — just seamless, confident protection during every workout.
- 💧 Holds up to 10ml — 1-2 tampons worth — the four layers of discreet absorbent gusset provide reliable protection for light periods, the start and end of your cycle, light bladder leaks, discharge, and sweat during exercise. Enough protection for confident everyday wear without the bulk of heavier-absorbency options.
- 🔝 Super high-waist design — the super high waist provides maximum coverage, comfort, and security — sitting higher than a standard high-waist knicker for a smooth, flattering silhouette that works under everything from gym leggings to tailored trousers.
- ⚫ Classic black colourway — the sleek black design works under any clothing colour, making the Coni the ultimate everyday knicker that pairs with your entire wardrobe without showing through light-coloured fabrics.
- 🧵 Four-layer gusset with waterproof TPU — the same trusted technology as The Polly: a soft cotton lining, absorbent middle layers, and a waterproof TPU barrier that absorbs, locks in, and prevents leaks from reaching clothing. Discreet, effective, and completely invisible.
- ♻️ Washable and reusable — wash at 30º or 40º, air dry, and reuse. A single pair of Coni knickers replaces hundreds of disposable liners, light pads, and tampons over its lifetime — saving money and reducing environmental impact simultaneously.
Usage Cases — When Will You Wear The Coni?
🏋️ 1. The Gym, Running & All Active Workouts
The Coni was designed with active women in mind. The VPL-free super high-waist design is completely invisible under gym leggings, cycling shorts, and any tight-fitting activewear — no visible panty line, no discomfort, no distraction from your workout. The 10ml absorbency handles sweat and light leaks during exercise, and the waterproof TPU barrier means nothing reaches your leggings. Whether you're running, doing yoga, lifting weights, or cycling, the Coni provides confident, discreet protection throughout.
🌙 2. The Start & End of Your Period
The beginning and end of your period — when flow is light and unpredictable — are exactly when the Coni shines. Light enough for 10ml absorbency to handle comfortably, but with enough protection to give you complete confidence on those uncertain days when you're not sure if your period has started or finished. Wear the Coni alone on light days, or alongside a tampon on days when you want extra security.
💼 3. Everyday Wear & Office Days
The Coni's super high-waist VPL-free design makes it an exceptional everyday knicker beyond its leakproof function — the smooth silhouette works beautifully under tailored trousers, fitted dresses, and any clothing where visible panty line is a concern. Wear it as your everyday knicker with the added confidence of leakproof protection for discharge, light leaks, and the unexpected start of your period.
🤰 4. Post-Pregnancy & Pelvic Floor Recovery
Light bladder leaks are extremely common after pregnancy and during pelvic floor recovery — affecting the vast majority of women at some point. The Coni's 10ml absorbency and discreet design provide reliable, dignified protection during this period without the bulk or embarrassment of conventional incontinence products. The super high-waist design also provides gentle abdominal support during recovery.
🌱 5. Sustainable Everyday Protection
For women who use daily liners for discharge or light protection, switching to the reusable Coni is one of the most impactful sustainable swaps available. The average woman uses thousands of disposable liners over her lifetime — all of which end up in landfill. A collection of Coni knickers replaces all of them, reducing environmental impact and long-term cost significantly. At £22 per pair, the Coni pays for itself within weeks of replacing daily disposable liners.
Real-Life Usage Situations
- Katie, 27, personal trainer: "I teach fitness classes all day and the Coni is the only knicker I wear for work. It's completely invisible under my leggings — no VPL, no riding up, no discomfort — and the leakproof protection handles sweat and the occasional light leak during high-impact classes. I own six pairs and rotate them through the week. At £22 they're exceptional value for what they deliver during a full day of teaching."
- Rachel, 34, uses it for the start of her period: "My period is always unpredictable at the start — I never know exactly when it's going to arrive. I wear the Coni every day in the week before my period is due and it's completely changed my relationship with that anxious waiting period. The 10ml absorbency handles the first day perfectly, the black colourway means I don't worry about showing through, and the super high waist is genuinely the most comfortable knicker I own. At £22 it's outstanding value."
- Priya, 41, post-pregnancy: "After having my second baby I had light bladder leaks that I found really difficult to manage discreetly. The NIXI Body Coni has been a complete game-changer — the 10ml absorbency handles my leaks perfectly, the super high waist is comfortable and supportive, and it looks and feels like a beautiful everyday knicker rather than a medical product. At £22 it's exceptional value for the confidence it gives me."
Why from £22 Is Outstanding Value
- Premium activewear-friendly period underwear from brands like Modibodi Sport, Thinx Sport, or Wuka Perform typically costs £28–£45+ per pair 💸
- Mid-range leakproof knickers from brands like M&S or Marks & Spencer? Usually £20–£32 per pair — but often without the VPL-free super high-waist design, the activewear-specific engineering, or the NIXI Body quality 🏷️
- Monthly spend on daily disposable liners? £3–£8 per month — adding up to £36–£96 per year that goes straight to landfill 😐
- At from £22 per pair, the NIXI Body Coni gives you VPL-free super high-waist design, invisible under gym leggings, 10ml absorbency (1-2 tampons), four-layer gusset, waterproof TPU barrier, classic black colourway, and washable reusable construction — the everyday confidence knicker that pays for itself within weeks ♻️
With 878 units in stock across sizes, find your size and make the switch today.
Confidence. Every Day. Every Workout. Every Moment.
The NIXI Body Coni Black Leakproof Knicker is available now at ALTOE from just £22.00. VPL-free super high waist, invisible under gym leggings, 10ml absorbency, four-layer gusset, waterproof TPU, washable and reusable — the everyday confidence knicker that goes wherever you go.
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