Kes-Vir Girl's Period Swim Briefs for when you have no other options. Discreet because they look like swim brief bottoms but has light absorption built-in the gusset place stategically to avoid leakage.
Outer fabric is waterproofed at front and back with further waterproof pocket integrated in the briefs and mesh lining to provide feeling of dryness, when out of the water.
Made from recycled fabric.