Pondxpert EPDM Pond Liner 9' 9'' x 9' 9'', Rubber Water Garden Fish Pond Liner ? EPDM Pond Liner ? Size is 9' 9'' x 9' 9'' (3m x 3m) ? 0.75mm Thickness ? Black in Color EPDM (ethylene propylene diene Monomer) is a synthetic rubber with properties very similar to butyl rubber pond liners. Historically butyl rubber pond liners have always been seen as ?top of the tree? in terms of desirability for pond builders. EPDM is a more modern fabric that takes all of the best elements of butyl pond liners onto a new level. It is black and textured just like butyl and when you put two samples together it is practically impossible to see or feel any difference. Our EPDM pond liners are 0.75mm thick. This is the standard thickness ? you can buy thicker pond liners but this makes the weight a real issue for what is only a marginal gain in strength. Plus thicker pond liners can leave bigger pleats when it is folded back on itself when installing into the corners of complex shapes. These pleats can retain water and get smelly and discolored over time. We sell many water garden koi fish pond liners online, check out our store. Terms and Conditions. We accept all approved payments methods. Sales Tax will be added to all shipments based regulations. We always try to combine purchases, please contact us directly for a personal service. You will be notified on the day that your goods have been dispatched via e-mail with tracking which is used on all purchases. Please note that if there are any problems, contact us first via e-mail giving full details of any problem along with your user ID. We use USPS and UPS as our chosen carriers shipments to Hawaii, Alaska Puerto Rico may incur surcharges, contact will be made to advise before shipment at which point the order can be canceled if desired. Orders placed on Saturday/Sunday Public Holidays will be processed next working day. We pride ourselves on excellent feedback, if any part of the buying experience is not to your satisfaction, please contact us to rectify before leaving feedback. By committing to buy you are agreeing to the Terms Conditions stated above.