Dono Carbon Fiber Training Wee Pads / Potty PadsDono Carbon Fiber Training Wee Pads Potty Pads Sizes available QTY per box: Small : 100PCS Box Medium: 50PCS. Box Large: 40PCS. Box Xlarge: 25PCS. Box 5 Layer Leak Proof Design Dono puppy training pads are engineered with a 5 layer of leak proof protection, helping to trap more pet urine for repeat use. Layer 1: High quality non woven fabrics as the top layer is clean and dry. Layer 2: Super Absorptive Polymer layer that turns liquid into gel