This convenient 5 pack of 1 lb. Shock X-Tra includes a shock treatment, pH buffer, clarifier and flocculent used to clear cloudy water. It won't stain or bleach vinyl liners. Disclaimers: 1.EP Household has no responsibility for physical injuries,emotional injuries,and mental injuries of the buyers or the users,if the buyers or the users got hurt in use of this product; 2.Any legal cases/claims filed against EP Household must be settelled down and negotiated via court of arbitration,no exceptions. 3.EP Household has no responsibility for the damage and/or loss of products/items ordered from EP Household if the buyers took the privilege of FREE SHIPPING on his/her order(s). 4.Cancellation on the customers' order(s) is at EP Household's Discretion,which means Customer(s)' order(s) placed will NOT be charged from EP Household's end until EP Household makes the shipment of the customer(s)' order(s).