2 Pack Heavy-Duty Bar Mat Pad PVC Rubber Dish Drying Spill Matting for KTV Bar Glass Home (M:12"x6")

Are these mats heat resistant?

Are both mats 24x12 each or do they total 24x12 when they are put together?

Are both mats 24x12 each or do they total 24x12 when they are put together?

Pls pour water in mat & state the volume it will hold - I plan to use as coffee maker mat if in case of leaks. Knowing volume will be helpful.