plain high-waisted bikini bottoms from KNWLS featuring black, recycled polyester blend, high-waisted and slip-on style. Be mindful to try on swimwear over your own garments.. This item is made from at least 50% recycled or upcycled materials. For recycled synthetic clothing products, we highly recommend using a microfibre-catching washing bag to ensure that no microplastics that can pollute water are released in the process.. Learn more about what makes a product Conscious on our Conscious Criteria page.