TrinsiAbsorbent Ceramic Stone Coasters for Drinks,Coffee Time,Set of 4 Stone Coasters (Coffee Blue)

Love the look but I have now broken 2. I drink a glass of room temperature water every morning and twice the glass has stuck to the coaster when I picked it up, not realizing the coaster was stuck to the bottom of the glass until it crashes on the floor and shatters.

GREAT