Durable 4.6x6m EPDM Pond Liner, 1.5mm Thick, Ideal for Water GardensPond Liner, 4. 6x6m 45 Mil Thickness, Pliable EPDM Material Pond Skins, Easy Cutting Underlayment for Fish or Koi Ponds, Water Features, Waterfall Base, Fountains, Water Gardens, Black Step 1 Step 2 Step 3 Premium EPDM Robust Tensile Strength Excellent Flexibility Thickness: 45 Mil 1. 5 mm,Color: Black,Item Model Number: EPDM 15*20 ft,Dimensions: 15 x 20 ft 4. 6 x 6 m,Material: EPDM,Lifespan: 20 Years,Weight: 85. 9 lbs 39 kg