{"product_id":"the-carla-black-leakproof-knicker-heavy","title":"NIXI Body Carla Black Leakproof Knicker — Heavy Absorbency","description":"\u003cdiv style=\"color: #3f2a2f; line-height: 1.7; max-width: 720px;\"\u003e\n\n\u003cp style=\"font-size: 1.1rem; color: #5c3d45;\"\u003e\u003cstrong\u003eHeavy period pants\u003c\/strong\u003e that give you genuine, all-day confidence — no matter what your cycle throws at you. The NIXI Body Carla Leakproof Knicker in Heavy absorbency holds up to 20ml (the equivalent of 4 tampons), making it the ultimate choice for heavier periods, endometriosis, light bladder leaks and everything in between. Reusable, beautifully designed and created in collaboration with The Endometriosis Foundation.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size: 1.5rem; color: #3f2a2f;\"\u003eWhy You'll Feel Confident in the NIXI Body Carla Heavy Knicker\u003c\/h2\u003e\n\n\u003cdiv style=\"background: #f7f4f0; padding: 25px; border-radius: 12px; border-left: 3px solid #7a5c3a; margin: 20px 0;\"\u003e\n\u003ch3 style=\"font-size: 1.2rem; color: #3f2a2f;\"\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✦\u003c\/span\u003e Key Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul style=\"font-size: 1.05rem; color: #4a2a33; padding-left: 20px;\"\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✧\u003c\/span\u003e \u003cstrong\u003eHeavy absorbency\u003c\/strong\u003e — holds up to 20ml (4 tampons’ worth) for confident, leak-free protection on your heaviest days\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✧\u003c\/span\u003e \u003cstrong\u003eCreated with The Endometriosis Foundation\u003c\/strong\u003e — designed with input from those who live with endometriosis, with £1 from every pair donated to the charity\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✧\u003c\/span\u003e \u003cstrong\u003eVPL-free high-leg design\u003c\/strong\u003e — flattering and discreet under any outfit, from workwear to loungewear\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✧\u003c\/span\u003e \u003cstrong\u003eSeamless waistband\u003c\/strong\u003e — ultra-comfortable, even for those living with scars, stomas or sensory sensitivities\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✧\u003c\/span\u003e \u003cstrong\u003eFour-layer absorbent gusset\u003c\/strong\u003e — moisture-wicking, odour-neutralising and fully waterproof TPU layer for total peace of mind\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✧\u003c\/span\u003e \u003cstrong\u003eReplaces pads \u0026amp; tampons entirely\u003c\/strong\u003e — wear alone on heavy days or alongside a menstrual cup for extra confidence\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✧\u003c\/span\u003e \u003cstrong\u003eReusable \u0026amp; sustainable\u003c\/strong\u003e — washable up to 40°C, designed to last years and reduce your environmental impact\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.5rem; color: #3f2a2f;\"\u003eHow to Wear the Carla Heavy Knicker with Confidence\u003c\/h2\u003e\n\n\u003cp style=\"font-size: 1.05rem; color: #4a2a33;\"\u003eThe Carla is designed for real life — the days when you need to know you’re protected without thinking about it. Wear it alone on heavy flow days and let the four-layer gusset do the work, or pair with a menstrual cup or tampon on your very heaviest days for an extra layer of reassurance.\u003c\/p\u003e\n\n\u003cp style=\"font-size: 1.05rem; color: #4a2a33;\"\u003eThe VPL-free, high-leg cut sits smoothly under everything — fitted trousers, bodycon dresses, gym leggings — so no one will ever know you’re wearing period pants. It’s the kind of quiet confidence that changes how you feel about your cycle entirely.\u003c\/p\u003e\n\n\u003cp style=\"font-size: 1.05rem; color: #4a2a33;\"\u003eLooking to build a complete period pants wardrobe? Browse our full \u003ca href=\"\/collections\/period-pants\" style=\"color: #7a5c3a;\"\u003eperiod pants \u0026amp; period underwear collection\u003c\/a\u003e, or explore our wider \u003ca href=\"\/collections\/shop-all-lingerie\" style=\"color: #7a5c3a;\"\u003elingerie \u0026amp; underwear edit\u003c\/a\u003e for everyday essentials. For a lighter flow, explore the \u003ca href=\"\/collections\/period-pants\" style=\"color: #7a5c3a;\"\u003eNIXI Body range\u003c\/a\u003e for medium and light absorbency options too.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size: 1.5rem; color: #3f2a2f;\"\u003eSizing, Fit \u0026amp; Care Tips\u003c\/h2\u003e\n\n\u003cdiv style=\"background: #f7f4f0; padding: 25px; border-radius: 12px; border-left: 3px solid #7a5c3a; margin: 20px 0;\"\u003e\n\u003ch3 style=\"font-size: 1.2rem; color: #3f2a2f;\"\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✦\u003c\/span\u003e Sizing\u003c\/h3\u003e\n\u003cp style=\"font-size: 1.05rem; color: #4a2a33;\"\u003e\u003cstrong\u003eWe recommend sizing down in the Carla for the most comfortable, secure fit.\u003c\/strong\u003e Available in sizes 6–20.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 1rem; color: #4a2a33; margin-top: 10px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #e8e0d8;\"\u003e\n\u003cth style=\"padding: 8px 12px; text-align: left; border: 1px solid #d4c9bc;\"\u003eUK Size\u003c\/th\u003e\n\u003cth style=\"padding: 8px 12px; text-align: left; border: 1px solid #d4c9bc;\"\u003eEU Size\u003c\/th\u003e\n\u003cth style=\"padding: 8px 12px; text-align: left; border: 1px solid #d4c9bc;\"\u003eUS Size\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e6\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e34\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f4f0;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e8\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e36\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e10\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e38\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f4f0;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e12\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e40\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e14\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e42\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f4f0;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e16\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e44\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e18\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e46\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e14\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f4f0;\"\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e20\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e48\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 12px; border: 1px solid #d4c9bc;\"\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"font-size: 1.2rem; color: #3f2a2f; margin-top: 20px;\"\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✦\u003c\/span\u003e Fabric Composition\u003c\/h3\u003e\n\u003cul style=\"font-size: 1.05rem; color: #4a2a33; padding-left: 20px;\"\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✧\u003c\/span\u003e Body: 75% nylon, 25% elastane\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✧\u003c\/span\u003e Lining: 95% cotton, 5% elastane\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✧\u003c\/span\u003e Middle layer: 80% polyester, 20% nylon\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✧\u003c\/span\u003e Waterproof TPU layer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"font-size: 1.2rem; color: #3f2a2f; margin-top: 20px;\"\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✦\u003c\/span\u003e Care Instructions\u003c\/h3\u003e\n\u003cul style=\"font-size: 1.05rem; color: #4a2a33; padding-left: 20px;\"\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✧\u003c\/span\u003e Rinse in cold water after wear before washing\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✧\u003c\/span\u003e Machine wash at 30°C or 40°C — do not use fabric conditioner\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✧\u003c\/span\u003e Do not tumble dry — air dry only (allow extra drying time due to the multi-layer gusset)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #7a5c3a;\"\u003e✧\u003c\/span\u003e With proper care, your Carla knickers will last for years\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size: 1.5rem; color: #3f2a2f;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3 style=\"font-size: 1.2rem; color: #3f2a2f;\"\u003eHow much do the Carla heavy period pants hold?\u003c\/h3\u003e\n\u003cp style=\"font-size: 1.05rem; color: #4a2a33;\"\u003eThe Carla Heavy holds up to 20ml — the equivalent of 4 tampons. This makes them one of the highest-absorbency \u003cstrong\u003eperiod pants\u003c\/strong\u003e available, suitable for heavy periods, endometriosis, postpartum flow and light bladder leaks.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 1.2rem; color: #3f2a2f;\"\u003eCan I wear the Carla knicker if I have endometriosis?\u003c\/h3\u003e\n\u003cp style=\"font-size: 1.05rem; color: #4a2a33;\"\u003eYes — the Carla was created in direct collaboration with The Endometriosis Foundation. The seamless waistband is specifically designed to be comfortable for those living with endometriosis, scars or stomas, and the heavy absorbency means fewer changes throughout the day.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 1.2rem; color: #3f2a2f;\"\u003eWhat size should I order?\u003c\/h3\u003e\n\u003cp style=\"font-size: 1.05rem; color: #4a2a33;\"\u003eNIXI Body recommend sizing down in the Carla for the most comfortable, secure fit. If you’re between sizes, go for the smaller size. The Carla is available in sizes 6–20. If you’re unsure, our UK customer service team is always happy to help — just drop us a message.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size: 1.2rem; color: #3f2a2f;\"\u003eIs it worth buying a bundle?\u003c\/h3\u003e\n\u003cp style=\"font-size: 1.05rem; color: #4a2a33;\"\u003eAbsolutely. Most women find they need 3–5 pairs to get through their cycle comfortably without daily washing. Our 3-pack and 5-pack bundles offer great value and mean you’ll always have a fresh pair ready.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size: 1.5rem; color: #3f2a2f;\"\u003eReady to Feel Confident Every Day of the Month?\u003c\/h2\u003e\n\u003cp style=\"font-size: 1.05rem; color: #4a2a33;\"\u003eThe NIXI Body Carla Heavy Leakproof Knicker is more than just period underwear — it’s a genuine game-changer for anyone who has ever felt let down by their period protection. Designed with care, backed by The Endometriosis Foundation, and built to last. Add your size to your basket today and discover what it feels like to get through your heaviest days with total confidence. \u003ca href=\"\/collections\/period-pants\" style=\"color: #7a5c3a;\"\u003eShop the full period pants collection →\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch2 style=\"font-size: 1.5rem; color: #3f2a2f;\"\u003eYou May Also Like\u003c\/h2\u003e\n\u003cul style=\"font-size: 1.05rem; color: #4a2a33; padding-left: 20px;\"\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/period-pants\" style=\"color: #7a5c3a;\"\u003ePeriod Pants \u0026amp; Period Underwear\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/shop-all-lingerie\" style=\"color: #7a5c3a;\"\u003eLuxury Lingerie \u0026amp; Underwear\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/shop-gifts-for-women\" style=\"color: #7a5c3a;\"\u003eGifts for Women\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/shop-bath-beauty-makeup\" style=\"color: #7a5c3a;\"\u003eBath, Beauty \u0026amp; Wellness\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"NIXI Body","offers":[{"title":"6 \/ Single","offer_id":57164636586361,"sku":"CarlaBlackHeavy6","price":23.0,"currency_code":"GBP","in_stock":true},{"title":"6 \/ 3 Pack","offer_id":57164636619129,"sku":"3PackCarlaBlack6","price":58.5,"currency_code":"GBP","in_stock":true},{"title":"6 \/ 5 Pack","offer_id":57164636651897,"sku":"5PackCarlaBlack6","price":92.0,"currency_code":"GBP","in_stock":true},{"title":"8 \/ Single","offer_id":57164636684665,"sku":"Carlablackheavy8","price":23.0,"currency_code":"GBP","in_stock":true},{"title":"8 \/ 3 Pack","offer_id":57164636717433,"sku":"3PackCarlaBlack8","price":58.5,"currency_code":"GBP","in_stock":true},{"title":"8 \/ 5 Pack","offer_id":57164636750201,"sku":"5PackCarlaBlack8","price":92.0,"currency_code":"GBP","in_stock":true},{"title":"10 \/ Single","offer_id":57164636782969,"sku":"Carlablackheavy10","price":23.0,"currency_code":"GBP","in_stock":true},{"title":"10 \/ 3 Pack","offer_id":57164636815737,"sku":"3PackCarlaBlack10","price":58.5,"currency_code":"GBP","in_stock":true},{"title":"10 \/ 5 Pack","offer_id":57164636848505,"sku":"5PackCarlaHeavy10","price":92.0,"currency_code":"GBP","in_stock":true},{"title":"12 \/ Single","offer_id":57164636881273,"sku":"Carlablackheavy12","price":23.0,"currency_code":"GBP","in_stock":true},{"title":"12 \/ 3 Pack","offer_id":57164636914041,"sku":"3PackCarlaBlack12","price":58.5,"currency_code":"GBP","in_stock":true},{"title":"12 \/ 5 Pack","offer_id":57164636946809,"sku":"5PackCarlaBlack12","price":92.0,"currency_code":"GBP","in_stock":true},{"title":"14 \/ Single","offer_id":57164636979577,"sku":"Carlablackheavy14","price":23.0,"currency_code":"GBP","in_stock":true},{"title":"14 \/ 3 Pack","offer_id":57164637012345,"sku":"3PackCarlaBlack14","price":58.5,"currency_code":"GBP","in_stock":true},{"title":"14 \/ 5 Pack","offer_id":57164637045113,"sku":"5PackCarlaBlack14","price":92.0,"currency_code":"GBP","in_stock":true},{"title":"16 \/ Single","offer_id":57164637077881,"sku":"Carlablackheavy16","price":23.0,"currency_code":"GBP","in_stock":true},{"title":"16 \/ 3 Pack","offer_id":57164637110649,"sku":"3PackCarlaBlack16","price":58.5,"currency_code":"GBP","in_stock":true},{"title":"16 \/ 5 Pack","offer_id":57164637143417,"sku":"5PackCarlaBlack16","price":92.0,"currency_code":"GBP","in_stock":true},{"title":"18 \/ Single","offer_id":57164637176185,"sku":"Carlablackheavy18","price":23.0,"currency_code":"GBP","in_stock":true},{"title":"18 \/ 3 Pack","offer_id":57164637208953,"sku":"3PackCarlaBlack18","price":58.5,"currency_code":"GBP","in_stock":true},{"title":"18 \/ 5 Pack","offer_id":57164637241721,"sku":"5PackCarlaBlack18","price":92.0,"currency_code":"GBP","in_stock":true},{"title":"20 \/ Single","offer_id":57164637274489,"sku":"Carlablackheavy20","price":23.0,"currency_code":"GBP","in_stock":true},{"title":"20 \/ 3 Pack","offer_id":57164637307257,"sku":"3PackCarlaBlack20","price":58.5,"currency_code":"GBP","in_stock":true},{"title":"20 \/ 5 Pack","offer_id":57164637340025,"sku":"5PackCarlaBlack20","price":92.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/6530\/5153\/files\/21_0c388319-c807-4660-b6fb-1c7021acb86e.png?v=1777446299","url":"https:\/\/www.ohsoluxe.co.uk\/products\/the-carla-black-leakproof-knicker-heavy","provider":"Oh So Luxe UK","version":"1.0","type":"link"}