Hexa-shield Solid ball function is very similar Hexa-Cover Floating Cover. The mainly application is to provide natural barrier to isolate or slow heat transfer. Owing to its shape is hexagon, it can achieve 100% seamlessly covering. No matter evaporation, emission reduction or odor controlling, it up to over 90%. However, owing to the pricessing is foaming technology, it will gradually shrink after 3-5 years.