The Stanley S-UMT-20X30-ST-BLKEUSA 20 in. x 30 in. Anti-Fatigue Utility Mat makes standing comfortable while working in your garage, workshop or utility room. It cushions from the top and supports from the bottom and is proven to relieve discomfort on feet, legs and back. Made of 100% high density polyurethane foam, this durable, tear-resistant material lays flat to help prevent tripping and the top and bottom surfaces provide traction to help prevent slipping. Its estimated that 80% of adults have experienced back pain which can be aggravated by standing for long periods of time. Stanleys Comfort Made Tough technology is designed with an optimal balance of cushion and support proven to relieve pressure and soreness on your feet, legs and back, giving you more time and energy to get down to work and finish the task at hand. The NSFI safety certified mat features anti-skid bottom and diamond plate textured surface for traction to prevent injuries caused by slipping. Lab tests confirm common fluids and chemicals such as motor oil, grease, antifreeze, WD-40 and gasoline do not affect the mats integrity. Measures 20 in. long by 30 in. wide with a 0.6 in. thick cushion for continuous comfort. Available in black. The Stanley S-UMT-20X30-ST-BLKEUSA 20 in. x 30 in. Anti-Fatigue Utility Mat comes with a 20-year limited warranty.