Description:Material: EVA foamHow does it work?Double layer design:The two-layer sifting system allows for all litter debris to be disposedThe -like indentions capture the litter debris and then the bottom layer of the litter mat can be separated from the top to release the debris into the trash.Honeycomb design:You would not feel the litter when you are walking on the mat since litter has gone down through large holes. Meanwhile protecting cats'?paws from hurting.