Smartcore Ultra is the smart choice for hi-def style and design 100% Waterproof - won't swell, crack or peel when exposed to water Easy DIY click install over existing hard surface floors with no subfloor prep, acclimation or adhesives Superior durability in the busiest homes Elevated true to life beauty and texture with enhanced beveled edges Attached UltraSoft® pad reduces sound and increases comfort For additional comfort, noise reduction and moisture protection, install with Smartcore Soft and Sound™ underlayment item #1191177 GREENGUARD Gold certification means this flooring meets stringent indoor air quality emissions criteria Lifetime limited residential warranty and 5 year light commercial warranty