Namsan Safety Heating Pad, Electric Heating Blanket, Waterproof Mat, Winter Warm Pad 7(25~55) levels temperature, it can adjust suitable temperature for your pet. Recommand 35-45. IP67 waterproof; chew resistant cord design; soft and removable cover; Low, safe voltage 11,9  11,9 inch, suitable for most small pets. Preheating time is about 5 minutes, and do not cover any cotton products on the pet pad when it is used. Namsan's Delivery: FBA(Fulfill by Amazon) can one day delivered, FBM(Fulfill by Merchant) will need 6--14 days, Not as Amazon system shows:14--28 working days