The Black Ultra Soft Weatherproof EPDM Foam Sheets with Plain Back can withstand water, sunlight, and oxidation. The sheets are designed with closed-cell foam which limits water, air, and gases from being absorbed. Thickness: 1/2 Inch Thickness Tolerance: -0.050" to +0.050" Inch Hardness Rating: Ultra Soft Temperature Range: -70° to 220° F Cell Type: Closed For Use Outdoors: Yes Tensile Strength Rating: Good Oil-Resistance Rating: Not Rated Color: Black Sheet Size: 36" x 36"