Reusable & Washable Potty Training Pads for Puppy Playpens. Midlee’s pee pads use durable and plush fabric with outstanding absorbent and breathable properties to soak up urine in a matter of seconds. Our large wee pads will come in handy for toilet training and watching over puppies, elderly, and incontinent dogs. We reinforced our pee pads with multiple layers to stop any kind of moisture, stain, and grime from ever touching your immaculate floorboards, rugs, and carpets.