Made with 4 layers, top fabric is a bamboo charcoal fleece lining for a soft and breathable feel, two layers of microfiber inside for super absorbency and a PUL waterproof fabric to keep all the moisture inside and prevent any leaking. Each set includes 3 x Extra large pads (29.5cm x 18.5cm) and 3 large size pads (25.5cm x 16.5cm) and one small wet bag.