Our Medium DoggieLawn grass (tray not included) is ideal for dogs under 30 lbs. The real grass pee pads are 24 x 20 inches and are hydroponically grown from a farm in California. This item ships from California and is a one time purchase only. For recurring deliveries, go to "Pick Your Plan" and choose your frequency. We recommend purchasing our Medium DoggieLawn tray with this item as a tray is not included.