The Xtreme Unhookingmat Cover is twice as thick as its predecessor. Namely, use was made of 420d material instead of 210d material. The Pro Line Xtreme Protection Unhooking mat has a handy cover with zippers and Velcro, no fish escapes from it. The Pro Line Extreme Unhooking Mat MKII is also equipped with a Carp Care bag including a zipper. Just like its predecessor, the Pro Line Extreme Unhooking mat has raised edges. The foam mat is sealed in an extremely sturdy plastic bag, this prevents the water from drawing into the mat.