Only 3 steps to leak-free living!

    • 1. Find your perfect pair!

      Take a look at our collection and choose the knickers that fit your needs. Just go with the flow - blood, sweat or pee we've got you covered.

    • 2. Order now or pay later! With Afterpay

      Order you favourite products and enjoy free shipping when you spend over $99. We'll carefully package and deliver to your door in a flash.

    • 3. Feel comfort & secure!

      Slip them on and feel the difference, soft, secure, and like they were made just for you.
      This is the start of your leak-free, worry-free journey… and trust us, there’s no going back.

      Featured In

      The Magic Behind the Comfort

      Our No Worry Knickers are powered by clever design and cutting-edge 4 layer leak-proof technology. With multiple absorbent layers that wick away moisture and lock in odours, these knickers keep you dry, fresh, and leak-free – no matter what your day throws at you!

      DISCOVER OUR COLLECTION

      Inner Stay Dry Layer

      Absorbs liquid, wicking away in seconds, leaving them dry to the touch.

      Ultra Absorbent Layer

      Absorbs and locks in moisture and odours

      Leak-proof Membrane

      Breathable and non toxic TPU membrane

      Outer Layer

      Dry, breathable, soft, stretchy and look just like regular knickers.

       
       
       
       

      Testimonials

      • Comfy Janes

        Well I have to say I was on the fence whether I believed the wonder of no worry knickers, I got a 5 pack and oh my they are wonderful, I cannot believe the difference in my confidence that I do not need to worry anymore while playing sports that I might leak running or have to wear a liner. I am over the moon happy 💕

        Cindy F

      • Cindy High Waist

        So surprised with how comfy they are, and have kept me covered with no leaks. Jess's customer service is great, I ordered the wrong size, sent an email asking to change and Jess emailed me back almost immediately, put my mind at ease. I'll be returning to buy more for sure.

        Chantal L

      • Seamless Cindy-Bikini Cut

        I’m a huge believer in customer service and to say that Jess goes over and beyond is an understatement, in fact I’m not sure what I love the best about myshinesisteter, the undies or Jess! I’ve tried two other brands of leakproof undies and as they say third time was the charm. So glad I found myshinesister, my search is over. Sincerely
        Eleonore

        Eleonore

        It Shouldn’t Be Taboo

        Let’s talk about what too many women suffer in silence.

        • 1 in 3 women experience bladder leaks, it's that common.
        • It can happen after childbirth, during exercise, or even from a simple sneeze.
        • Incontinence isn't just about age, young women experience it too.
        • Pads and liners aren’t your only option (or the most sustainable).
        • Many women wait years before seeking help, let’s break that silence.

        The good news?
        You don’t have to live in fear of leaks. ShineSister’s leak-proof knickers are designed to support your body discreetly, comfortably, and confidently—so you can get back to doing you.

        SHOP COLLECTION

        It's Our Promise to You

        • Superior Support

          Leak-proof living made easy with knickers that don’t just catch leaks—they support your body, move with you, and feel like your favourite pair. Stylish, secure, and seriously comfortable—so you can go about your day with total confidence.

        •  Sustainability

          Reuse or recharge! At ShineSister, we say no to single-use waste and yes to reusables that are better for your body and the planet. Thoughtfully made with eco-conscious, toxic free materials, our undies help you reduce landfill and live lighter, one wear at a time.

        • Outstanding Quality

          Quality fabrics, quality products, quality service, because you deserve it! From the first stitch to your final wear. We use premium, breathable fabrics and rigorous design standards to create leak-proof knickers that feel luxe, fit beautifully, and perform when it matters most.

        • Absolute Guarantee

          We’re confident you’ll love your ShineSister knickers—but if your first pair isn’t the perfect fit, we’ve got you. Our Perfect Fit Guarantee means you can try risk-free: if it doesn’t fit or feel right, we’ll refund or replace your first pair. No stress, no fuss—just comfort and confidence, guaranteed.

          FAQ's

          How do leak-proof knickers work?

          Our knickers use advanced multi-layer technology to absorb liquid, lock in odours, and keep you feeling dry. The top layer wicks moisture away, while the built-in absorbent core holds leaks securely—without feeling bulky.

          What can I use them for?

          while absorbencies vary, they're perfect for periods, light bladder leaks, discharge, postpartum recovery, and even sweat. Whether you're sleeping, exercising, or on the go—they’ve got you covered.

          How much can they hold?

          Our knickers can absorb up to 2–4 tampons’ worth, depending on the style. Check each product description for exact absorbency levels to find your perfect match.

          When do I need to change them?

          It depends on your flow or level of leaks. Most ShineSisters can be worn for up to 8–10 hours, just like a regular pair of undies. On heavier days or if you’re unsure, it’s a good idea to bring a spare pair—just like you would with pads or tampons. You’ll know it’s time to change when the gusset starts to feel damp.

          Do they feel like wearing a pad?

          Not at all. Our gusset is thin, flexible and breathable—designed to feel just like your favourite pair of knickers. Soft, comfy, and completely discreet.

          How do I wash and care for them?

          It’s simple: rinse in cold water, then machine wash in a bag on gentle cycle with mild detergent. Line dry—no fabric softeners or dryers, please. With proper care, they’ll last for years.

          Are they safe and non-toxic?

          Yes. ShineSister knickers are free from PFAS, toxic coatings, and harmful chemicals. We only use safe, tested fabrics that are gentle on sensitive skin and kind to the planet.

          Do I need to wear a pad or liner?

          Nope! Our knickers are designed to be a complete replacement for disposables during light to moderate leaks. If you have a very heavy flow, you may prefer to pair them with a cup or tampon.

          How long do they last?

          With the right care, your No Worry Knickers can last 2–3+ years or 100+ washes—making them a sustainable and cost-effective alternative to disposable products.

          PERFECT FIT GUARANTEE

          FREE SHIPPING OVER $99

          LOVED BY 15,000+ WOMEN

          UP TO 50% OFF STOREWIDE

          PERFECT FIT GUARANTEE

          FREE SHIPPING OVER $99

          LOVED BY 15,000+ WOMEN

          UP TO 50% OFF STOREWIDE

          PERFECT FIT GUARANTEE

          FREE SHIPPING OVER $99

          LOVED BY 15,000+ WOMEN

          UP TO 50% OFF STOREWIDE

          PERFECT FIT GUARANTEE

          FREE SHIPPING OVER $99

          LOVED BY 15,000+ WOMEN

          UP TO 50% OFF STOREWIDE

          PERFECT FIT GUARANTEE

          FREE SHIPPING OVER $99

          LOVED BY 15,000+ WOMEN

          UP TO 50% OFF STOREWIDE

          PERFECT FIT GUARANTEE

          FREE SHIPPING OVER $99

          LOVED BY 15,000+ WOMEN

          UP TO 50% OFF STOREWIDE

          PERFECT FIT GUARANTEE

          FREE SHIPPING OVER $99

          LOVED BY 15,000+ WOMEN

          UP TO 50% OFF STOREWIDE

          PERFECT FIT GUARANTEE

          FREE SHIPPING OVER $99

          LOVED BY 15,000+ WOMEN

          UP TO 50% OFF STOREWIDE

          PERFECT FIT GUARANTEE

          FREE SHIPPING OVER $99

          LOVED BY 15,000+ WOMEN

          UP TO 50% OFF STOREWIDE

          PERFECT FIT GUARANTEE

          FREE SHIPPING OVER $99

          LOVED BY 15,000+ WOMEN

          UP TO 50% OFF STOREWIDE