The material of this door sign is made of PU with the right thickness. It's and flexible and fits directly over the doorknob. It's unbreakable and tear-proof unless you put in the effort. The double-sided door hanger sign can clearly tell hotel staff when you need to sleep, and please do not disturb, or when room cleaning is required. Features -Color:Assorted Color -Material:PU -Size:23.00X9.00X0.40cm/9.04X3.54X0.16in - The door hanger sign is made of safe material, and wear-resistant, which can be used for long time. - The hanger door sign has simple and generous appearance, modern and simple style, suitable for most hotel doors. - This double-sided sign clearly tells that whether you don't want to be disturbed, or you want to get your room cleaned, very practical. - The door hanger sign is perfect and wonderful for many occasions, such as bar, coffee shop, club and so on. - The hotel door hanger sign is clear and easy to read, and it can be very easy to be hung on the door. Package list: 8 x Door Hanger Sign