This string reinforced liner is perfect if you are looking for extra strength or durability in a commercial or highly used residential application. This is a high quality 4 layer 6 mil film. The string reinforced has an ultra reflective white on the top layer to keep the unwanted radiation off of the rink and a useful black layer on the bottom. The black bottom makes it extra easy to find any holes or punctures after the first year of use. Just hold the liner up to the sun and use super secret tape to patch any holes for future use. Please allow 7-10 business days for fulfilment of the string reinforced liner. Other custom sizes are available upon request, cost is $0.12 per square foot. Give us a call and we can help you out.