Statement from DBK Group, UK
'The Drymatic mat material are tested to UL 964 – Flammability of Shells Test and UL 964 – Ease of Ignition Test and are certified to DIN 4102 B1 and BS7837 which is flame-retardant, so will not continue to burn on their own after the heat source is removed'
Medium and large bags for the Drymatic Mats