Walmart pads come in different flavors -- so the varying satisfaction expressed here may be the result of very different "blue foam" pads. Some of Walmarts pads are the same mini-microcell foam as Gossomer Gear sells. Others are the simple microcell poly most often called "blue foam". Still others are a large cell poly that is good for little except summer camp in the subtropics. Look at the cell size. If the cells are microscopic AND the pad is lightweight for its size, you have a winner. Otherwise, not. I have several of the Walmart "winners" in different thicknesses, distributed under the Ozark Trails.label.