Fifteen years ago, Australian-based CGear developed a specially woven portable helimat that helps military chopper pilots avoid “brown out” as sand is whipped up by their rotor blades during takeoffs and landings. The company brings the same technology to the outdoor market with its series of sand-free ground mats that are ideal for everything from a weekend at the beach to hard use afield as expedient flooring under tarps and other shelters. The CGear Comfort Sand-Free Mat has a patented dual-layer weave that allows small particles to fall through but not return to the surface. The size large mat measures 78" square, and other sizes, colors and styles are available. Price: $80. Contact: CGear;cgear-sandfree.com.