Work bed sheet?

Where to order the blue, work bed sheets for the Flashforge Dreamer printer?I cannot find them here in Denmark.

They are available from Amazon.com. However, I suggest you consider using a PEI sheet instead. After I damaged yet another blue sheet, I tried PEI and have never looked back. Another suggestion- I use a hand spray bottle of Isopropyl alcohol. Let the print bed cool, then spray the alcohol around the edges. Greatly simplifies getting the print off the bed.