Different sizes for Stay Away Shock Mats: 20*48 inch, 12*60 inch, 30*16 inch... 1. Keeping pets stay away from certain areas 2. Flexible PVC and copper wire made 3. Responds to your pets touch with harmless low-power 4. 3 level of static : Low(200mA),Middle(250mA),High(300mA) 5. Optional AC adapter 6. 1 pcs of 9V battery required.(not includ) 7. Product Size: 20*48 inch(50.8*122 cm) 8. Certificate: CE/RoHS