Norpro 4 Piece Gripping Flexible Color Cutting Mats
Lightweight, flexible and easy to use on any flat surface.  Non porous, won't retain odors or dull knives.  Use with grid side down on a flat surface or countertop.  Avoid cross contamination, use a different one for each food group.  Great for camping and RV.  FDA approved and dishwasher safe.