Crossing yards or grassy areas in a wheelchair is difficult because the wheels sink into the soft ground and don't roll easily. To create a firm surface across such terrain, a rigid sheet of hard-plastic mesh called TuffTrack Grass Paver can be laid down. Grass Paver comes in 4-foot by 4-foot hard-plastic sections and is laid on the ground, covered with a thin layer of soil, then has grass planted over top to conceal it. The hard plastic prevents wheel-chair wheels from sinking into the soft soil, providing a firm path.