UPDATE 11/12/13: the use I lacked fire. Indeed, 4mn in the microwave in a terracotta dish, this BRULE the fabric (it is black in three very specific locations)
While still 4mn in a small glass bowl poses absolutely no problem.
BIZARRE
HOWEVER TAKE NOTE IF YOU WERE NOT SATISFIED PRODUCT THERE ARE NO RETURN POSSIBLE
THIS IS NOT INDICATED AT THE TIME OF PURCHASE BUT ONLY WHEN THE RETURN
SO NOT COOL N4EST THIS AT ALL
BE SURE OF YOUR CHOICE IF NOT GO AWAY