Product features: 94.05% trichlor-s-triazinetrione 84.65% available chlorine Slow dissolving sanitizer Contains SunShield-a built-in stabilizer to protect free chlorine residual Kills bacteria and controls algae Contains SilkGuard-patented technology which makes the water softer and protects pool equipment by helping to prevent metal staining, corrosion and scale. For pickup only cannot be shipped. Reg. Price $ 119.95