Far-infrared dog heater, M size, providing warmth. - Brand: Comfortable - Model: Far-Infrared Heater M size - Size: 360mm x 250mm x 30mm - Weight: 2.6kg - Usage: Washable, temperature 38℃, 30-minute auto-off Thank you for viewing. I am selling this as I only used it a few times initially and haven't used it since. I have confirmed that it heats up properly when turned on. When shipping, I will wrap the cardboard box containing the product with bubble wrap. Please understand that this is a used item before purchasing.