Aqua Blox (200 ml, 6.75 oz) boasts a 5-Year Shelf Life without the addition of additives or preservatives. All water is received from a municipal water source and undergoes a UHT Pasteurizing Process before being packaged into a sterile, hermetically sealed, seven-layer carton. Case of 32. No risk of water molecules penetrating packaging, No risk of package migration or unsavory taste.