Thank you for viewing! (*^-^*) The hook color is random. ○ Comes with a hook, so you can fix it in your favorite place. ○ If you have a rabbit, they can enjoy digging, which helps with lack of exercise and stress relief. ○ You don't have to worry about the slippery surface of a heated pad, so they can spend time safely. Why not try it for rabbits who don't usually use heaters? ○ It can be washed. 〈Size〉 Approximately 40cm x 40cm 〈Material〉 Polyester ※ Heater not included! ※ We hope you will like it (^ー^) ※ Since it is handmade, please refrain from purchasing if you are sensitive to such things.