The HydroShield 50 Synthetic Underlayment Samples are a 10 in. x 8 in. cut piece of the Hydroshield 50. Hydroshield 50 underlayment consists of 100% synthetic woven material with a cool grey spunbond non-woven fabric walking surface. It has a high tear strength and a slip-resistant, non-woven backing made of Aqua Trak and coated with a tacky, back-side, slip resistant coating. It is UV resistant and can remain uncovered for up to 6 months. This underlayment has a 50-year warranty and is guaranteed to shed water. A pre-printed nailing pattern and overlap lines speed installation.