Flexitank Design Features: Will not rust, rot or corrode and ships for significantly less than traditional tanks. Made in the US with 22 oz. extruded coated thermoplastic material, reinforced with polyester and nylon scrims. RF (radio frequency) welding in the fabrication process ensures fail-save welds and a contaminate-free seal. Excellent abrasion resistance along with great migration blocking characteristics Grey color reduces UV light penetration Fill & drain fittings included LAYFLAT DIMENSIONS: 92" X 77" (+/- 2")