ProTeam Shock & Swim is a fast acting, non-chlorine oxidizing treatment for swimming pools. This non-chlorine oxidizer will not raise chlorine to an unacceptable level. It enhances swimmer comfort and restores sparkle and clarity to dull water. Shock & Swim will not bleach or fade vinyl liners. Swimming may be resumed in just 15 minutes after use. It is compatible with chlorine, bromine, copper-silver ionization, and chlorine generators. Best of all, Shock & Swim is made right here in the USA to ensure the highest quality, allowing you to buy with confidence.