Please note that two bags are new and two bags have been opened. I am selling these because my hamster has passed away. A heater, which is helpful for temperature control during the cold season, is also included. Operation has been confirmed. It has been used for about a year, so there are scratches and signs of use. Feel free to comment if you have any questions! This is a set of 4 packs of white paper bedding, 500g each, that is gentle on pets and people. - Brand: KAMIYUKA - Type: White Type - Contents: 500g - Features: Paper bedding gentle on pets and people - Quantity: 4 bags Marukan Heater - Power: 100V / 4.5W Thank you for looking.