Preliminary - The mat serves its purpose, is practical and functional. "Star deduction" only because of the substantial risk of injury when unpacking! The mat will "jump" when cutting the plastic tape completely uncontrollable and untenable apart, and (do not disturb once the mat is) the rather sharp edges (not just on the hands) lead despite gloves to painful injuries. Thank you to this point to the other buyers who have warned right out front! A warning of the manufacturer one searches in vain.
