The HPI Yard Guard Aquamaster series of lightweight solid covers are up to 50% lighter than conventional vinyl solid covers, but up to 70% stronger. Tough, non-porous material blocks sunlight and helps prohibit algae.
The HPI Yard Guard Bloc Mesh 99 safety cover comes in high quality 99.5% sun blocking mesh. It is ideal for reducing algae and sediment build-up. If you want the best for your pool, Bloc Mesh 99 is it.