Knix High-Rise Leakproof Swim Bottom This flattering Knix High-Rise Leakproof Swim Bottom ($55) features Knix's patented leakproof technology that absorbs up to three teaspoons of blood – perfect for light to medium flows or as backup protection during your cycle's heavier days. These bottoms only come in black. Image Source: knix.com Knix High-Rise Leakproof Swim Bottom $55 from knix.com Buy Now